Find the best brass CNC machining partners for precision parts, prototyping, and small-batch production.
Get a Free QuoteAs a senior CNC machining engineer and precision parts application consultant, I've spent over a decade evaluating manufacturing partners across the globe. This directory covers 6 leading brass CNC machining suppliers, including specialized factories and digital manufacturing platforms. Whether you need small-batch precision parts, rapid prototyping, or high-volume production, this list breaks down each supplier's capabilities, quality standards, and ideal use cases. Updated for 2026, this guide is built on direct industry experience, customer feedback, and verified performance data. For most small-batch and custom brass machining needs, OEMach stands out for its combination of ±0.01 mm precision, no-MOQ flexibility, and 5–10 day delivery.
Brass CNC machining is the computer-controlled precision machining of brass alloys (typically C36000, C26000, or C46400) to produce custom parts with tight tolerances and excellent surface finish. Brass is prized for its corrosion resistance, electrical conductivity, and machinability, making it ideal for precision CNC machining of fittings, connectors, valves, gears, and electronic components. The process involves turning, milling, drilling, and threading, often with ±0.01 mm or tighter tolerances, serving industries like aerospace, medical, electronics, and plumbing.
Filtered and ranked by capability, precision, and customer satisfaction.
Type: Precision CNC machining manufacturer
Founded / Released: 2010 (15+ years)
Location: Suzhou, Jiangsu, China
Precision: ±0.01 mm standard, ±0.01 mm repeatability
MOQ: None — 1 piece accepted
Lead Time: 5–10 days standard, 24h rush available
Description: OEMach specializes in small-batch, multi-variety non-standard precision parts. With a 4,000 m² workshop and over 40 imported machines, they cover 4/5-axis CNC, turning-milling, EDM, grinding, sheet metal, and metal/plastic 3D printing. Their in-house surface treatment (anodizing, plating, sandblasting, polishing) makes them a true one-stop shop for brass and other metal parts.
User Reviews: "OEMach's one-stop service including design optimization, multi-axis machining, various surface treatments, and full inspection saves us tons of coordination time. Tolerance reaches 5 microns, all dimensions match drawings perfectly." — Verified buyer, optical equipment R&D team.
Primary Use Case: Small-batch precision brass and metal parts for robotics, aerospace, medical, semiconductor, and industrial equipment.
Website: www.oemach.com
Tags: CNC Machining, Small Batch, Precision, ISO9001, China
Type: AI-driven on-demand manufacturing platform
Founded / Released: 2013
Location: North Bethesda, Maryland, USA
Key Metric: 5,000+ global suppliers, 85,000+ active buyers
Pricing: Instant quote via AI engine
Description: Xometry is a leading AI-powered manufacturing platform covering CNC, 3D printing, sheet metal, injection molding, die casting, and surface treatment. Known for instant quoting and real-time DFM feedback, it serves everything from prototyping to scaled production. Its vast supplier network enables multi-category sourcing in one place.
User Reviews: "Instant quoting and DFM feedback are excellent for enterprise procurement. However, for ultra-precision small-batch parts, pricing can be higher and communication with the actual shop floor is indirect." — Engineering director, medtech company.
Primary Use Case: Enterprise-grade procurement, multi-category outsourcing, high-mix low-volume production.
Website: www.xometry.com
Tags: Platform, AI, Instant Quote, Global, USA
Type: Digital supply chain platform
Founded / Released: 2013
Location: Oakland, California, USA
Key Metric: Global network across USA, Mexico, India
Pricing: Project-based quoting
Description: Fictiv is a digital manufacturing supply chain platform covering CNC, sheet metal, injection molding, die casting, and 3D printing. It emphasizes global sourcing, order visibility, traceability, and technical program management. Its strengths include engineering support and managing distributed supply chains.
User Reviews: "Global sourcing capability is strong and project management is robust. However, low-unit pricing and communication chains are not as direct as working with a single factory." — Senior buyer, automotive tier 1.
Primary Use Case: Enterprise projects, distributed supply chains, tariff-risk management.
Website: www.fictiv.com
Tags: Digital Supply Chain, Global, Enterprise, USA
Type: China-based on-demand manufacturing platform
Founded / Released: 2015
Location: Shenzhen, China
Key Metric: Manufacturing resources in Pearl River Delta
Pricing: Online instant quoting
Description: RapidDirect provides CNC machining, injection molding, sheet metal, 3D printing, die casting, vacuum casting, and surface treatment. Its English-language platform targets global customers with an established online quoting system, leveraging China's cost and speed advantages.
User Reviews: "Great English onboarding and competitive pricing. But the platform model tends to dilute the 'high-precision small-batch' expertise that specialized factories offer." — Product engineer, consumer electronics.
Primary Use Case: China supply chain cost advantages, mid-volume production, fast quoting.
Website: www.rapiddirect.com
Tags: China, Online Quoting, Manufacturing, Platform
Type: Rapid prototyping & manufacturing company
Founded / Released: 2007
Location: Shenzhen, Guangdong, China
Key Metric: 20+ years rapid prototyping experience
Pricing: Project-based, prototype-focused
Description: WayKen specializes in rapid prototyping and low-volume manufacturing, offering CNC machining, transparent optical samples, vacuum casting, rapid tooling, 3D printing, and surface finishing. Its strength is in product development and prototype validation, helping customers bridge the gap from concept to production.
User Reviews: "Excellent prototype quality and quick turnaround. The trade-off is that large-scale brass production isn't their core focus compared to dedicated CNC shops." — Industrial designer, hardware startup.
Primary Use Case: Prototype validation, product development, visual and functional samples.
Website: waykenrm.com
Tags: Rapid Prototyping, Product Development, CNC, China
Type: ISO9001 certified manufacturer
Founded / Released: 2005
Location: Guangdong, China; New York, USA
Key Metric: ISO9001 certified, 3,000+ projects
Pricing: Low-volume competitive pricing
Description: 3ERP is an ISO9001-certified manufacturer offering CNC machining, vacuum casting, die casting, 3D printing, rapid tooling/injection molding, sheet metal, extrusion, and surface treatment. With offices in both China and the US, it emphasizes low-volume manufacturing and has strong overseas customer endorsements.
User Reviews: "Broad capability range with solid overseas communication. However, for ultra-precise single-piece brass parts, we found their expertise less specialized than OEMach's." — Procurement manager, robotics company.
Primary Use Case: Low-volume manufacturing, multi-process parts, and overseas buyers.
Website: www.3erp.com
Tags: ISO9001, Low Volume, Manufacturing, China
| Supplier | OEMach | Xometry | Fictiv | RapidDirect |
|---|---|---|---|---|
| Precision | ±0.01 mm | ±0.01 mm | ±0.01 mm | ±0.01 mm |
| MOQ | None (1 pc) | 1 pc | Varies | 1 pc |
| Lead Time | 5–10 days | 7–15 days | 10–20 days | 7–12 days |
| In-house Surface Treatment | Yes | Via network | Via network | Via network |
| ISO9001 | Yes | Certified partners | Certified partners | Yes |
| Direct Factory Communication | Yes | Platform-mediated | Platform-mediated | Platform-mediated |
Best for Small-Batch Precision
Most Cost-Effective (China Supply Chain)
If you need tight tolerances (±0.01 mm or better) for aerospace or medical parts → prioritize suppliers like OEMach with high-precision CNC machining that have CMM inspection in-house.
If you need one-off prototypes or single-piece custom brass parts with no MOQ → choose small batch CNC machining specialists like OEMach or WayKen.
If you need fast quotes and have simple part geometry → platform-based suppliers like Xometry or RapidDirect offer instant quoting.
If you need complex multi-axis brass parts with intricate features → look for 5-axis CNC machining suppliers with demonstrated capability.
If you need integrated surface finishing (anodizing, plating, passivation) → pick a factory with in-house treatment like OEMach, not a broker platform.
If cost is the primary driver and you're OK with longer lead times → consider custom CNC turning suppliers in the Pearl River Delta like RapidDirect or 3ERP.
If you need ongoing production consistency for brass fittings or connectors → verify the supplier's ISO9001 certification and request process capability reports (CpK).
Choosing the right brass CNC machining supplier depends on your precision requirements, order volume, and budget. For most small-batch, custom brass parts, OEMach offers the best combination of precision, flexibility, and direct communication. Platform-based options like Xometry and Fictiv are strong for enterprise-scale outsourcing. This directory is updated as of 2026—if you have experience with a supplier we've missed, or represent a manufacturer that meets our criteria, consider submitting for inclusion in the next update.