Top 20 Brass CNC Machining Service Vendors by Production Route

Last updated: October 2026

Verified brass CNC machining service vendors match your part geometry, alloy specification and batch volume to the shop’s spindle route: Avanti Engineering, DW Products and Spex Precision fit high-volume screw-machined fittings, Pioneer Service and Hogge Precision handle AS9100D regulated hardware, and Zhenling Metal machines custom 3-, 4- and 5-axis turn-mill brass components from engineering drawings.

Brass is a copper-zinc alloy and is one of the more widely specified engineering metals. The electrical and thermal properties of brass differ significantly by grade. A shop specializing in machining free machining brass (UNS C36000 / 360 brass) on cam-driven multi-spindle automatics will use a different machining process and chip handling system than a shop using a 5-axis machining center cutting C46400 naval brass manifolds or a lead-free C69300 potable water valve body. The goal of this reference is to group 20 verified direct manufacturers by production route, to allow engineering and procurement teams to identify custom brass parts and match each drawing to the correct spindle configuration.

Disclosure: This guide is published by Zhenling Metal. We list ourselves first because this is our website, not because we claim to be the market leader. The other 19 manufacturers are grouped by what they’re best for, in no particular order within each group.

How We Selected These Brass CNC Machining Service Vendors

All the manufacturers on this shortlist have in-house, CNC-controlled lathes, Swiss-type sliding-head lathes, multi-spindle screw machines, and/or milling centers with published brass machining capabilities. Company information was verified against the official manufacturing websites in October 2026. Information from trading companies, distributors, sourcing platforms, directories, and media websites, as well as used machine tool dealers, was excluded.

Procurement teams looking for a brass machining company (Dedicated parts manufacturer or CNC brass machining specialist) often come across online manufacturing marketplaces in addition to factory websites. Digital brokerages often simplify quoting and ordering for more routine custom parts, but these orders are often fulfilled by anonymous subcontractors, where chip segregation, coolant and tool changeover aren’t controlled. Every manufacturer in this list has a physical plant in one of the identified countries, owns its machine tool shop and produces brass parts and components.

We screened 28 manufacturers, and 20 were shortlisted across four distinct production routes: custom multi-axis turn-mill shops, high-volume Swiss and multi-spindle screw machining shops, aerospace and medical regulated-spec shops, and agile shops for prototypes and production. Published quality management certificates, bar-diameter envelopes and machining properties are noted in each company’s capability sheet for high-quality brass CNC work. If an official website reviewed didn’t state a founding year or certificate number, the table and profile noted the omission rather than guessing from marketing slogans.

20 Brass CNC Machining Service Vendors Compared

Matching your part geometry and annual release volume with a supplier’s primary spindle architecture reduces set-up waste and secondary handling. Use this to pre-filter brass CNC machining companies by headquarters location, founding history, core alloy scope and shop-floor trade-offs, and then send drawings for formal quotation.

Brass Turn-Mill & Swiss Sourcing Matrix

The Brass Turn-Mill & Swiss Sourcing Matrix compares each manufacturer’s stated spindle configuration and range of materials with its practical purchasing boundary for brass CNC machined parts. Swipe horizontally on mobile devices to inspect all ten columns.

Source: The matrices were developed using official company capability pages and quality assurance documents, reviewed in October 2026. Capabilities shown are as stated by each supplier; best-for labels are editorial engineering judgement on practical purchase limits.

Custom CNC Turn-Mill and Multi-Axis Brass Manufacturers

Turn-mill and multi-axis brass manufacturers produce valve bodies, manifolds, and sensor housings with hexagonal fittings, turned threads, milled flats and cross-drilled or angled recesses. These five shops run 3-, 4- and 5-axis machining centers alongside CNC turning lathes to complete complex brass parts in fewer setups.

1. Zhenling Metal: Best for drawing-based 3-, 4- and 5-axis CNC turn-mill brass manifolds, valve bodies and threaded fittings

Location: Jiashan, Zhejiang, China (manufacturing plant); founded in Shanghai · Founded / origins: 2006 · Type: Custom CNC machining and metal fabrication manufacturer

Official website: https://zhenlingmetal.com/

Main products: Custom CNC-turned and milled brass ring components, threaded hexagonal fittings, pocketed annular parts and manifolds

Certifications / stated scope: CE and ASME certification stated on its website for pressure-related work; ISO-9001:2015 tolerance control referenced on its brass page

Founded in Shanghai in 2006 with an 8,000 m² self-owned manufacturing plant in Jiashan, Zhejiang, Zhenling Metal produces build-to-print brass components using 3-, 4- and 5-axis CNC milling, CNC turning, boring, drilling and wire-EDM. Published brass specifications cover free-cutting brass (C360), cartridge brass (C260) and naval brass for threaded hexagonal fittings, stepped ring parts with radial hole patterns and multi-port fluid blocks. In-house coordinate measuring machine (CMM) inspection and surface finishing support tight-tolerance assemblies that must arrive ready for seal installation. Because the plant operates strictly as a custom contract manufacturer rather than a catalog hardware distributor, buyers must supply 2D/3D engineering drawings and specify any special raw-bar extrusion profiles upfront.

2. AC Manufacturing: Best for 5-axis precision milled and turned brass prototypes and short-to-medium production batches in Silicon Valley

Location: San Jose, California, USA · Founded / origins: 1995 · Type: Precision CNC milling and turning machine shop

Official website: https://acmanufacturing.com/

Main products: Custom CNC-milled and turned brass parts, prototypes, electronic hardware and cylinder components

Certifications / stated scope: Not stated on reviewed official pages

Operating in San Jose, California since 1995, AC Manufacturing provides precision CNC milling and turning for hardware teams across Silicon Valley and the broader United States. Dedicated brass capability pages highlight 3-axis, 3+2-axis and full continuous 5-axis machining on Haas UMC 750 and Haas VF-5SS machining centers, paired with precision turning lathes and CAD/CAM programming. The shop machines 360 free-machining brass and Alloy 230 red brass with a published minimum order quantity of 1 piece, supporting rapid design validation through medium-volume production runs. As a single-plant California precision machine shop, its cell layout targets complex milled and turned components rather than million-piece cam-screw commodity fasteners.

3. Reading Plastic & Metal: Best for precision CNC milling, turning, routing and stamping of brass, copper and mixed metal-plastic OEM assemblies

Location: Reading, Pennsylvania, USA · Founded / origins: 1978 · Type: Precision metal and plastic CNC machining manufacturer

Official website: https://readingplastic.com/

Main products: Precision CNC-milled, turned, routed and stamped brass, copper, aluminum, titanium and stainless steel parts

Certifications / stated scope: ISO 9001:2015 certified (with AS9100D through Reading Advanced Machining, as stated on its website)

Delivering precision machined parts in Reading, Pennsylvania since 1978, Reading Plastic & Metal combines multi-axis CNC milling, CNC turning, CNC routing, sawing and precision stamping under one roof. Metal machining cells handle CNC parts machining across brass, copper, stainless steel machined housings, aluminum and titanium alongside custom plastic parts, making it a strong fit for OEMs ordering brass contact blocks or valve manifolds paired with polymer insulators and seals. The company states ISO 9001:2015 certification and notes AS9100D compliance through its Reading Advanced Machining division, backed by optical and CMM metrology. Equipment rosters center on prismatic milling, turning and die stamping rather than high-volume multi-spindle bar screw machining.

4. Resolute Precision Manufacturing: Best for bar-fed CNC turning up to 3.2 in. diameter, Swiss CNC (20–38 mm) and multi-axis milling across six brass alloys

Location: Angola, Indiana, USA · Founded / origins: Not stated on reviewed official pages · Type: Direct CNC Swiss turning, bar-fed turning and multi-axis milling manufacturer

Official website: https://resoluteprecision.com/

Main products: Custom CNC-turned brass fasteners, fittings, bushings, valve bodies, manifolds and sensor housings

Certifications / stated scope: ISO 9001:2015 certified, according to its website

Based in Angola, Indiana, Resolute Precision Manufacturing positions itself as a direct manufacturer operating Swiss CNC lathes (20–38 mm bar capacity), bar-fed CNC turning centers handling stock up to 3.2 inches in diameter, vertical and horizontal multi-axis mills, and in-house honing. Brass CNC machining pages detail alloy-specific processing across six grades: C36000 free-cutting brass, C26000 cartridge brass, C28000 Muntz metal, C38500 architectural bronze, C46400 naval brass and C48500 high-leaded naval brass, citing tolerances down to ±0.0005 inches on qualified features. That multi-alloy scope helps engineers transition marine or fluid components between leaded and naval brass grades within one ISO 9001:2015 facility. According to its website, heat treating, EDM, precision grinding and surface coatings are coordinated through external partner operations rather than performed in-house.

5. Rally Precision: Best for export-oriented 3-, 4- and 5-axis CNC milling, turning and Swiss machining of C36000, C26000 and C46400 brass parts

Location: Ningbo, Zhejiang, China · Founded / origins: 2005 · Type: Custom CNC machining and Swiss turning manufacturer

Official website: https://www.rallyprecision.com/

Main products: Custom CNC-machined brass fittings, connectors, valve parts, shafts and milled housings

Certifications / stated scope: ISO 9001:2015 quality system stated on its Ningbo company profile

Established in Ningbo, Zhejiang in 2005, Rally Precision operates 3-, 4- and 5-axis CNC milling centers, CNC turning lathes and Swiss-type automatic lathes for global industrial buyers. Dedicated brass pages specify experience with C36000 free-cutting brass, C26000 cartridge brass and C46400 naval brass, supported by secondary electroplating, passivation, brushing and polishing. By housing both multi-axis milling centers and sliding-head Swiss lathes under an ISO 9001:2015 quality system, the plant handles mixed BOM packages that include both prismatic brass blocks and slender turned pins. Because production takes place in Ningbo, US defense programs governed by domestic ITAR restrictions must select an ITAR-registered domestic vendor from the regulated group below.

Swiss CNC and High-Volume Screw-Machining Brass Specialists

Swiss CNC and multi-spindle shops provide the fastest cycle times for thousands to millions of electrical terminals, valve stems, threaded inserts and brass fittings. Slender shafts are supported with sliding-head guide bushings and 6- and 8-spindle automatics.

6. Avanti Engineering: Best for high-volume multi-spindle Davenport screw machining and Swiss CNC turning of brass fittings and couplings

Location: Glendale Heights, Illinois, USA · Founded / origins: 1972 · Type: High-volume screw machine products and CNC turning manufacturer

Official website: https://www.avantiengineering.com/

Main products: Precision machined brass fittings, couplings, adapters, valve stems and custom screw machine products

Certifications / stated scope: ISO 9001:2015 quality certification stated for its Glendale Heights plant

Founded in 1972 and operating from a 55,000-square-foot facility in Glendale Heights, Illinois, Avanti Engineering is a manufacturer of precision brass machined parts specializing in medium-to-high-volume bar-fed turning services. The plant runs Hybrid Davenport multi-spindle screw machines alongside CNC Swiss lathes and multi-axis CNC turning centers under an ISO 9001:2015 quality management system. That combination allows purchasing teams to run high-speed cross-drilled, slotted and threaded brass couplings on multi-spindle automatics while routing tighter-tolerance slender shafts to CNC Swiss cells. Tooling setup and bar-feeder changeover make this facility a poor match for single-piece prismatic billet prototypes.

7. DW Products: Best for INDEX 8-spindle CNC multi-spindle and Swiss screw machining of fluid, pneumatic and automotive brass connectors

Location: Cedar Rapids, Iowa, USA · Founded / origins: 1951 · Type: Multi-spindle CNC and Swiss screw machining manufacturer

Official website: https://www.dwproducts.com/

Main products: Custom brass fluid, pneumatic and hydraulic connectors, fittings, fasteners and screw machine components

Certifications / stated scope: ISO 9001:2015 certified and ITAR registered, according to its website

Established in 1951 in Cedar Rapids, Iowa, DW Products operates an all-CNC screw-machining plant built around INDEX 8-spindle CNC multi-spindle screw machines and single-spindle Swiss CNC lathes. Unlike legacy cam-driven screw machines, its INDEX 8-spindle CNC platform combines multi-spindle cycle speed with CNC servo repeatability, backed by AIAG-compliant PPAP, APQP and statistical process control (SPC) for automotive and fluid-power brass fittings. The company states ISO 9001:2015 certification and ITAR registration on its website. Company capability notes state that conventional turning and milling services are provided via trusted partners while in-house spindles focus on multi-spindle and Swiss screw machining.

8. Spex Precision Machine Technologies: Best for high-volume Davenport multi-spindle and Swiss CNC turning of C360 brass sensor housings, valve bodies and electrical terminals

Location: Rochester, New York, USA · Founded / origins: 1946 · Type: High-volume precision screw machining and Swiss CNC turning manufacturer

Official website: https://www.spex1.com/

Main products: High-volume C360 brass fittings, sensor housings, valve components, terminal connectors and turned shafts

Certifications / stated scope: ISO 9001:2015 certified quality management stated for its Rochester operation

Founded in 1946 in Rochester, New York, Spex Precision Machine Technologies focuses on high-volume precision turned components for automotive, HVAC, fluid-control and electrical OEMs. High-volume machining pages highlight Multi-Spindle (Davenport) screw machining and Swiss CNC turning of C360 free-cutting brass for production lots between 5,000 and 200,000+ pieces, with multi-million-piece annual contract capacity. In-house engineering supports design-for-manufacturability reviews aimed at consolidating secondary cross-drilling and thread-rolling into a single bar-fed cycle under ISO 9001:2015 control. Because its production cells are engineered for repeat bar-stock automation, buyers seeking one-off 5-axis milled prototype blocks should look to a prototype-focused mill shop instead.

9. Brassland: Best for high-volume Swiss-turned (Ø2–32 mm) and hot-forged plus CNC-machined brass components across 30 copper-alloy grades

Location: Jamnagar, Gujarat, India · Founded / origins: 2000 · Type: Dedicated brass and copper-alloy CNC turning and Swiss machining manufacturer

Official website: https://brassland.com/

Main products: Swiss-turned brass pins, electrical terminals, fluid fittings, forged valve bodies and lead-free brass components

Certifications / stated scope: ISO 9001:2015, ISO 14001:2015 and ISO 45001:2018 certified (DQS Inc.), as stated on its website

Headquartered in Jamnagar, India and founded in 2000, Brassland is a dedicated copper-alloy manufacturer operating 79+ CNC machines, including 28+ sliding-head Swiss lathes covering bar diameters from 2 mm to 32 mm and multi-axis turn-mill centers, with hot brass forging coordinated through qualified forging partners. Capabilities pages list 30 brass and copper alloys, spanning North American C36000, European CW614N and CW617N forging brass, DZR brass (CW602N / CZ132) and lead-free silicon brass C69300, alongside automated ultrasonic cleaning and chip-briquetting systems that segregate leaded and lead-free swarf. The plant holds ISO 9001:2015, ISO 14001:2015 and ISO 45001:2018 certifications issued by DQS Inc. Brassland machines exclusively brass, bronze and copper alloys, so buyers cannot bundle ferrous steel or plastic components into the same purchase order.

10. Falcon CNC Swiss: Best for high-volume Swiss CNC turning and multi-spindle screw machining of miniature brass pins, inserts and connectors

Location: Fenggang, Dongguan, Guangdong, China · Founded / origins: Not stated on reviewed official pages · Type: Contract Swiss CNC turning, multi-spindle screw machining and 5-axis machining manufacturer

Official website: https://www.falconcncswiss.com/

Main products: Precision brass and copper connectors, fittings, valve couplings, electrical contacts, inserts and bushings

Certifications / stated scope: ISO 9001:2015, ISO 13485 and IATF 16949 stated on its website

Operating from Fenggang, Dongguan, Falcon CNC Swiss specializes in high-volume Swiss CNC turning, multi-spindle screw machining and 5-axis milling for miniature and small-diameter brass hardware. Brass turned-parts pages cite diameters down to 0.020 inches (0.5 mm), published tolerances down to ±0.0004 inches (±0.01 mm) and monthly output capacities from 10,000 to over 500,000 pieces across C360, C260, C37700 forging brass and lead-free C46400 and C69300 grades. On its About page, the company states ISO 9001:2015, ISO 13485 and IATF 16949 certifications for automotive, medical and electronics supply chains. Spindle fleets are built around small-to-medium bar stock rather than large-envelope heavy plate milling.

11. LuckyHXS CNC: Best for Swiss CNC turning, automatic lathe and turn-mill machining of C360, C3604, DZR and lead-free brass fittings and pins

Location: Bao’an, Shenzhen, Guangdong, China · Founded / origins: 2005 · Type: Custom CNC turning, Swiss machining and milling manufacturer (Shenzhen Hongxiangsheng Technology Co., Ltd.)

Official website: https://luckyhxscnc.com/

Main products: Custom brass connectors, valve bodies, nozzles, bushings, pins, contacts and milled housings

Certifications / stated scope: ISO 9001 certified, according to its website

Founded in 2005 in Bao’an, Shenzhen as Shenzhen Hongxiangsheng Technology Co., Ltd., LuckyHXS CNC runs Swiss-type CNC lathes, automatic lathes, turn-mill centers and 3- to 5-axis milling machines. Brass material pages explicitly cover both ASTM C36000 and Japanese JIS C3604 free-cutting brass, C26000 cartridge brass, dezincification-resistant (DZR) brass for water fittings, and project-specified lead-free brass grades. Secondary surface treatments include nickel, chrome, gold, silver and tin electroplating for electrical terminals and pneumatic nozzles under an ISO 9001 quality system. The shop focuses on commercial, plumbing and electronics hardware rather than AS9100 aerospace-certified flight structures.

Aerospace, Medical and Regulated-Spec Brass Machine Shops

Aerospace, defense, medical-device and automotive fluid programs often require documented quality systems such as AS9100D, ISO 13485, IATF 16949 or US ITAR registration alongside full raw-material heat traceability. These four manufacturers publish audited multi-standard certifications and dedicated inspection protocols for high-consequence brass components.

12. Pioneer Service Inc.: Best for AS9100D, ISO 13485 and ITAR-compliant CNC Swiss turning and centerless grinding of precision shafts and pins

Location: Hodgkins, Illinois, USA · Founded / origins: 1990 · Type: Precision CNC Swiss machining, CNC turning and centerless grinding manufacturer

Official website: https://www.pioneerserviceinc.com/

Main products: Tight-tolerance CNC Swiss-machined and turned shafts, pins, valves and precision components for aerospace, medical and industrial applications

Certifications / stated scope: AS9100, ISO 9001 and ISO 13485 certified (DQS) and ITAR registered, as stated on its website

Operating in Hodgkins, Illinois since 1990, Pioneer Service Inc. combines CNC Swiss turning and multi-axis CNC turning with in-house thru-feed and in-feed centerless grinding. That integrated grinding capability allows the shop to hold tight outer-diameter roundness, concentricity and micro-inch surface finish requirements on brass valve spools, medical instrument shafts and aerospace connector pins without outsourcing grinding to a second vendor. Company quality pages document DQS-audited AS9100, ISO 13485 and ISO 9001 certifications alongside US State Department ITAR registration and full lot traceability. Because the plant is engineered around bar-fed cylindrical turning and centerless grinding, buyers needing large 5-axis prismatic housings must use a milling-focused facility.

13. Hogge Precision Parts: Best for AS 9100 D and ISO 9001 lights-out 7- and 8-axis CNC turning, Swiss and multi-spindle machining of brass components

Location: Hartsville, South Carolina, USA · Founded / origins: 1989 · Type: Precision CNC turning, Swiss machining and multi-spindle contract manufacturer

Official website: https://www.hoggeprecision.com/

Main products: Custom CNC-machined brass and lead-free Eco-Brass fittings, connectors, bushings, valves and threaded fasteners

Certifications / stated scope: AS 9100 D and ISO 9001:2015 registered company, according to its website

Founded in 1989 in Hartsville, South Carolina, Hogge Precision Parts operates a 42,000-square-foot facility equipped with 7- and 8-axis CNC turning centers, Swiss-style CNC screw machines, multi-spindle automatics and vertical CNC mills. Dedicated brass machining pages highlight both traditional free-cutting brass and lead-free Eco-Brass for fluid, electrical and defense hardware, supported by robotic automated cells for lights-out production. The company is registered to AS 9100 D and ISO 9001:2015, offering vendor-managed inventory (VMI) and kanban release programs for domestic OEMs. Machine cells are structured around bar-fed turning, Swiss and compact milling envelopes rather than large-format structural plate work.

14. GrovTec Machining: Best for AS9100D and ITAR-registered Swiss CNC turning, multi-spindle screw machining and milling of medical, dental and defense brass parts

Location: Wood Village, Oregon, USA · Founded / origins: 2006 · Type: Contract CNC turning, Swiss machining, multi-spindle and milling manufacturer

Official website: https://grovtecmachining.com/

Main products: Precision brass electrical contacts, medical and dental fittings, connectors and defense hardware

Certifications / stated scope: AS9100D and ISO 9001:2015 certified (TÜV Rheinland) and ITAR registered, as stated on its website

Established in 2006 in Wood Village, Oregon, GrovTec Machining manufactures precision brass, stainless steel, aluminum and titanium components across Swiss CNC lathes, multi-spindle screw machines, conventional CNC turning centers and CNC mills. Brass capability pages emphasize high-speed machining of medical and dental fittings, electrical contacts and defense hardware where burr-free internal passages and thread accuracy are mandatory. The facility holds TÜV Rheinland-audited AS9100D and ISO 9001:2015 certifications and maintains active ITAR registration for US defense supply chains. Operating from a single regulated US plant in Oregon entails a higher domestic cost floor than offshore commercial prototype shops.

15. Bole Solutions: Best for 5-axis CNC machining (DMG Mori, Okuma, Haas) in a dedicated brass machining cell under ISO 9001, ISO 13485 and IATF 16949

Location: Chang’an, Dongguan, Guangdong, China · Founded / origins: 2007 · Type: Rapid prototyping and precision multi-axis CNC machining manufacturer

Official website: https://bolesolutions.com/

Main products: Precision 5-axis milled and turned brass RF connectors, valve blocks, manifolds and functional prototypes

Certifications / stated scope: ISO 9001:2015, ISO 13485:2016, IATF 16949:2016 and ISO/IEC 27001:2013 certified, as stated on its website

Founded in 2007 in Chang’an, Dongguan, Bole Solutions runs 20 sets of 5-axis CNC machining centers (including DMG Mori DMU 95 and Hermle units) alongside a dedicated brass machining cell outfitted with Okuma, DMG Mori and Haas equipment. Dedicating specific spindles to C36000, C26000 and C27000 brass prevents ferrous chip cross-contamination and keeps coolant chemistry tuned for non-ferrous surface finishes. Company quality records list ISO 9001:2015, ISO 13485:2016 medical, IATF 16949:2016 automotive and ISO/IEC 27001:2013 information-security certifications, protecting customer CAD files during rapid prototyping and batch production. The plant focuses on 3-, 4- and 5-axis milling and turning batches rather than cam-driven multi-spindle screw machine runs.

Rapid Prototype and Agile Batch Brass CNC Manufacturers

Hardware teams produce prototype runs of 1 to 500 machined brass parts for new valve manifolds, RF enclosures, or sensor bodies within days. They often require flexibility for changes to a design before committing to multiple spindles or a custom forging die.

These five Pearl River Delta manufacturers focus on rapid turn-mill prototyping, flexible minimum order quantities and multi-finish export delivery.

16. WayKen Rapid Manufacturing: Best for rapid prototype and low-volume 3-, 4- and 5-axis CNC milling and turning of C360, C260 and naval brass parts

Location: Shenzhen, Guangdong, China · Founded / origins: Not stated on reviewed official pages · Type: Rapid prototype and low-volume CNC machining manufacturer

Official website: https://waykenrm.com/

Main products: Custom CNC-machined brass prototypes, optical/automotive housings, valve bodies and low-volume mechanical parts

Certifications / stated scope: ISO 9001:2015 and IATF 16949:2016 certified, according to its website

Based in Shenzhen, WayKen Rapid Manufacturing specializes in functional prototyping and low-volume bridge production across 3-, 4- and 5-axis CNC milling, CNC turning and EDM. Brass CNC machining pages detail work with C360 free-cutting brass, C260 cartridge brass, C230 red brass and C464 naval brass, offering bead blasting, brushing, mirror polishing and electroplating for optical, automotive and fluid-handling assemblies. The factory holds ISO 9001:2015 and IATF 16949:2016 certifications and conducts CMM inspection prior to shipment. Because its workflow is built around high-mix prototype and low-volume batches, unit pricing will not match a multi-spindle screw house on 100,000-piece fastener orders.

17. RapidDirect: Best for fast-turn brass CNC prototypes and scalable batch orders combining self-owned Pearl River Delta shops with digital quoting

Location: Shenzhen, Guangdong, China · Founded / origins: 2009 · Type: Self-owned CNC manufacturing factory and digital manufacturing service provider

Official website: https://www.rapiddirect.com/

Main products: Custom 3-, 4- and 5-axis CNC-milled and turned brass prototypes, enclosures, brackets and fittings

Certifications / stated scope: ISO 9001:2015, ISO 13485:2016, ISO 14001 and IATF 16949 certified, as stated on its website

Founded in 2009 in Shenzhen, RapidDirect operates self-owned manufacturing facilities totaling over 10,000 m² with 200+ 3-, 4- and 5-axis CNC machines while also coordinating a broader partner network through its digital quoting engine. CNC machining service pages list C36000 and C26000 brass capabilities across milling, turning, mill-turn, Swiss CNC and wire EDM, citing standard ISO 2768-m tolerances and precision features down to ±0.001 inches (±0.025 mm). Published certifications include ISO 9001:2015, ISO 13485:2016, ISO 14001 and IATF 16949. Because RapidDirect combines self-owned factories with partner capacity, buyers who require single-floor spindle control and chip segregation should specify in-house Shenzhen execution on the purchase order.

18. Bergek CNC: Best for agile 5-axis CNC milling and turning of custom brass prototypes and low-to-medium batch hardware

Location: Bao’an, Shenzhen, Guangdong, China · Founded / origins: Not stated on reviewed official pages · Type: Custom CNC milling, turning and sheet metal manufacturer (Shenzhen Bergek Technology Co., Ltd.)

Official website: https://www.bergekcnc.com/

Main products: Custom CNC-turned and milled brass components, shafts, bushings, gears and electronic fittings

Certifications / stated scope: ISO9001 and ISO13485 certifications stated on its website

Operating as Shenzhen Bergek Technology Co., Ltd. in Bao’an, Shenzhen, Bergek CNC runs a 9,000+ m² manufacturing facility housing 78 sets of equipment across 5-axis CNC machining, CNC turning, CNC milling and sheet metal fabrication. Brass CNC turned-parts pages highlight custom brass shafts, knurled inserts, gears, bushings and sensor connectors with published tolerance capability down to ±0.005 mm on qualified turned features. The company states ISO 9001 and ISO 13485 quality certifications on its About page and provides CMM inspection reports for export batches. Shop-floor layouts are configured for bar-and-billet machining and sheet metal rather than hot brass closed-die forging.

19. STCNC Machining: Best for low-volume CNC turning and milling of C360 and CZ121 brass prototypes and custom mechanical fittings

Location: Chang’an, Dongguan, Guangdong, China · Founded / origins: Not stated on reviewed official pages · Type: Custom CNC machining and rapid prototyping manufacturer (SINOTECH Machining Co., Limited)

Official website: https://stcncmachining.com/

Main products: Custom CNC-turned and milled C360 and CZ121 brass parts, bushings, nozzles and threaded adapters

Certifications / stated scope: ISO 9001:2015 certification stated on its Dongguan homepage

Located in Chang’an, Dongguan and operating as SINOTECH Machining Co., Limited, STCNC Machining offers rapid prototyping and small-to-medium batch CNC turning, 3-, 4- and 5-axis milling and wire EDM. Brass CNC machining pages explicitly list both North American ASTM grades (C360, C260) and British/European BS 2874 CZ121 (CW614N) high-speed machining brass, making it convenient for UK and European buyers whose legacy drawings call out CZ121 bar stock. Available secondary finishes include nickel plating, chrome plating, passivation and ultrasonic cleaning under an ISO 9001:2015 quality system. The shop is structured for agile low-to-medium batch CNC orders rather than multi-spindle bar automation.

20. Yuanyi Hardware (YYCNC): Best for multi-axis mill-turn, Swiss CNC and gantry milling of C360, C353, C260 and C464 brass parts with tight Swiss tolerances

Location: Fenggang, Dongguan, Guangdong, China · Founded / origins: 2012 · Type: Custom CNC milling, turning, mill-turn and Swiss machining manufacturer (YUANYI)

Official website: https://www.yycncmachining.com/

Main products: Custom CNC-machined brass pipe fittings, valve bodies, bushings, control knobs and electrical connectors

Certifications / stated scope: ISO 9001:2015 and ISO 14001:2015 certified, as stated on its quality assurance page

Providing precision CNC machining services in Dongguan since 2012, Yuanyi Hardware (YYCNC) operates gantry CNC mills, 3-, 4- and 5-axis machining centers, mill-turn lathes and Swiss-type CNC automatics. Brass CNC machining specification tables cover C360 free-cutting brass, C353 high-leaded thread-rolling brass, C260 cartridge brass and C464 naval brass, stating typical milling and turning tolerances of ±0.005 mm and Swiss-turning tolerances down to ±0.003 mm on suitable micro-features. Quality assurance pages display ISO 9001:2015 and ISO 14001:2015 certificates alongside first-article inspection (FAI) and CMM reporting. As an export contract shop serving diverse industries, buyers should specify exact ASTM or EN alloy designations and internal cross-hole deburring acceptance criteria on the print.

How to Choose a Brass CNC Machining Service Vendor

When choosing a brass CNC machining service vendor, consider your alloy designation, part length-to-diameter ratio, thread plating allowance and annual batch volume, and compare these to the capabilities of the spindle fleet. A shop that’s outstanding at C36000 screw-machine fittings, might be poor at handling gummy lead-free C69300 swarf, or at 5-axis angled ports on mill manifolds.

If your assembly also includes custom machined aluminum housings or polymer seals, compare our aluminum CNC machining factory comparison and our plastic CNC machining supplier guide. Across fluid, electrical and industrial brass CNC machining applications, apply the eight engineering and procurement checks below before awarding a purchase order for high-precision brass hardware.

1. Lock the exact brass alloy and standard on the drawing: Specify UNS C36000 under ASTM B16/B16M-19 free-cutting brass rod (rated at 100% machinability by the Copper Development Association) for general screw-machine parts, C26000 cartridge brass when cold flaring or crimping is required after machining, C46400 naval brass for seawater corrosion resistance, or C69300 (Eco-Brass) / C27450 for potable-water plumbing hardware.
2. Enforce leaded versus lead-free swarf and coolant segregation: Free-cutting C36000 contains 2.5% to 3.7% lead for chip breaking, whereas potable-water fittings under the U.S. EPA Safe Drinking Water Act lead-free rule can’t have a weighted average lead content of more than 0.25% in wetted surfaces. Contaminated leaded brass fines can cause a batch of lead-free C69300 to fail surface wipe testing or lead extraction testing.
3. Match spindle architecture to part geometry by routing slender cylindrical pins (length-to-diameter ratio above 4:1 and bar diameter under 32–38 mm) to sliding-head Swiss CNC lathes, high-volume connectors to 6- or 8-spindle screw machines, and multi-face valve blocks to 3-, 4- or 5-axis mill-turn centers. Our comparison of three-, four- and five-axis machining explains how multi-axis indexing eliminates cumulative fixture error across angled ports.
4. Establish pre-plating and post-plating pitch diameters as early as possible: electroplating (bright nickel, chrome, tin or silver) adds coating of ~4 times the nominal radial deposit to thread flanks, so specifying 2A/2B, NPT, or BSPP thread gauges after plating helps the machinist cut the correct pitch diameters and engineered clearances for threaded parts.
5. Cross-hole deburring and thermal stress relief annealing: Burrs in lead-free brass require high-pressure coolant tools or back-chamfering. Rollover burrs on fluid ports in half-hard brass require thermal/ultrasonic deburring. Cold-worked brass parts exposed to ammonia or outdoor humidity also need a low-temperature stress-relief anneal (250–300 °C for 30–60 minutes) to prevent season cracking.
6. Audit quality credentials once at the supplier-approval stage by checking current certificate scope (ISO 9001, AS9100D, ISO 13485 or IATF 16949), mill test report (MTR) heat-lot traceability, the first-article inspection (FAI) plan and any outsourced plating or heat-treatment processors once during onboarding rather than repeating document audits on every simple quote.
7. Consider in-house spindles versus partner subcontracting: some factories perform Swiss turning in-house while subcontracting 5-axis milling, grinding or electroplating when machining components with complex secondary steps. Ask for a quote that names the facility performing each CNC machining operation.
8. Review brass swarf recovery credit on high-volume bar orders: turning a hollow hex fitting from solid brass bar often converts 45% to 65% of the bar weight into clean brass chips. High-volume screw-machining vendors factor closed-loop brass turnings recycling into their raw-material cost, lowering net piece price compared with shops that treat swarf as uncredited waste.

“Lead-free refers to a weighted average of not more than 0.25 percent lead when used with respect to the wetted surfaces of pipes, pipe fittings, plumbing fittings, and fixtures.”

How do you prevent burrs and thread binding on plated brass CNC parts?

Prevent burrs and thread binding on plated brass CNC parts by programming dedicated back-chamfering passes at every cross-hole intersection, maintaining sharp positive-rake carbide inserts, and cutting pre-plate thread pitch diameters to compensate for 4x radial plating buildup before nickel, tin or silver electroplating.

Drilling through an internal valve bore, or through a threaded port of C26000 cartridge brass or C69300 lead-free brass, leaves ductile burrs instead of the swarf snapping cleanly like a leaded C36000 chip. The burrs are removed by roughing the bore and drilling the cross-hole, followed by a mill or back-spotfacer pass. For plated threads, specify the exact coating thickness in micrometers (for example, 5–8 μm electroless nickel) and note on the drawing that Class 2A/2B or GO/NO-GO ring and plug gauges apply after plating.

When Does Swiss Turning or Screw Machining Beat 3-Axis and 5-Axis Milling?

Swiss CNC turning and multi-spindle screw machining beat 3-axis and 5-axis milling whenever your brass part is primarily cylindrical, fits within bar-feeder diameter limits (2 mm to 38 mm for Swiss or up to 80 mm for bar lathes), and requires continuous bar-fed production.

In a sliding-head Swiss lathe, the brass bar advances through a carbide guide bushing while cutting tools engage just millimeters from the support point. That geometry prevents tool-pressure deflection on long, thin electrical contact pins, watch stems and medical fluid needles that would chatter in a conventional chucking lathe or vertical machining center. Multi-spindle screw machines (such as the Davenport and INDEX 8-spindle lines operated by Avanti Engineering, DW Products and Spex Precision) divide the cut across 5, 6 or 8 rotating spindles simultaneously, dropping cycle time to a few seconds per piece on high-volume fittings.

Conversely, 3-, 4- and 5-axis CNC milling, or heavy mill-turn centers, win when the part is a prismatic manifold block, an asymmetric housing with deep pocketed cavities, or a large-diameter flange exceeding bar-feeder capacity. When an angled valve body or pump housing needs high-volume repeatability with minimal metal removal, hot brass closed-die forging (using alloys such as C37700 or CW617N) followed by secondary CNC boring and threading cuts raw-bar waste and eliminates internal casting porosity. Our CNC milling service covers prismatic and multi-face brass components machined directly from bar, plate or customer-supplied forgings.

What Should a Brass CNC Machining RFQ Include?

A complete brass CNC machining RFQ should include a fully toleranced 2D drawing along with a 3D STEP model, the exact UNS/ASTM or EN alloy and temper, thread gauge classes before and after plating, rules for internal deburring, and your batch release schedule.

Ambiguous drawings force estimators to pad cycle times or omit secondary operations that later trigger change orders. When a brass manifold or valve housing includes compound-angle ports that must intersect cleanly without secondary plugs, reviewing our five-axis machining service scope helps clarify which datums should be cut in a single clamping setup. Include the six specification items below in every RFQ package so competing vendors price an identical deliverable.

• 2D drawing and 3D CAD file hierarchy: Provide a native STEP or IGES 3D model for toolpath programming alongside a PDF 2D drawing that designates critical-to-quality (CTQ) tolerances, GD&T datums, thread classes and surface roughness (for example, Ra 0.8 μm on O-ring sealing grooves).
• Alloy standard, temper and compliance scope: call out the exact material designation (such as ASTM B16 C36000 H02 half-hard, European CW614N, or lead-free C69300) and state whether RoHS, REACH or EPA Safe Drinking Water Act lead-free material declarations and mill test reports are required.
• Thread and surface finish: Indicate the standard for plating or passivation, target coating thickness, masked sealing faces, and whether thread GO/NO GO gauges are used post-plating.
• Internal burr and cleanliness acceptance: Indicate inspection criteria for intersecting fluid flow paths and passages, cross-drilled holes and other similar features, and ultrasonic cleaning and/or tarnish inhibiting packaging requirements.
• Requirements for orders and blanket release schedules: provide prototype sample quantity, initial production batch size, and approximate annual usage to help shops evaluate single-spindle turning against multi-spindle or forged blank tooling.
• Break down commercial obligations and swarf credit by separating costs for raw materials, non-recurring fixture or gauge engineering, unit machining, surface finishing, and CMM first article inspections.

How much does custom brass CNC machining cost?

Custom brass CNC machining cost is driven by raw copper-zinc bar weight, alloy grade (lead-free silicon brass costs more to buy and cuts slower than C36000), spindle cycle time, tolerance class, electroplating specifications, batch setup amortization and the swarf recovery credit applied to turned chips.

Compared to 6061 aluminum, brass bar costs around 2 to 3 times as much per kilogram. Although raw brass bar costs roughly two to three times as much per kilogram as 6061 aluminum, free-cutting C36000 machines at much higher surface speeds with minimal tool wear and lower spindle power consumption. On medium- to high-volume bar-turning jobs where half or more of the solid rod is turned into clean chips, if a shop segregates and recycles C36000 swarf, a significant portion of the raw material cost is recovered. Always compare total landed unit prices of identical lot sizes, inspection levels and plating conditions. Don’t compare unit piece rates of brass to the generic hourly spindle rates.

Frequently Asked Questions

Procurement engineers and product designers who are evaluating brass CNC machining companies most frequently ask how to match a shop to their part geometry, how a direct manufacturer differs from a broker platform, and how leaded C36000 differs from lead-free alloys. For direct engineering answers to the questions, please expand the text below.

Request a Drawing-Based Brass Machining Review

Zhenling Metal reviews 2D and 3D engineering drawings for custom brass manifolds, threaded fittings, valve bodies and precision turned-and-milled assemblies. Send your part model, UNS/ASTM or EN brass alloy designation, critical tolerances, surface finish callouts and target batch quantities to receive a process-matched manufacturability and pricing review.

Explore our brass CNC machining service for detailed alloy, equipment and tolerance specifications, or learn more about our Jiashan manufacturing operation. Matching the best spindle route to your drawing before cutting metal prevents secondary handling, burr defects and thread-plating mismatches.