Brass CNC machining services: custom brass parts from 1 pc

CNC machined brass parts we make

Brass is the material for parts that need clean threads, sharp edges, and fine features. Our custom brass machining covers brass machined parts such as fittings, threaded inserts, nozzles, electrical contacts, and frames. Two examples from our shop floor:

Brass threaded inserts also go into our other parts: we fit them in-house in PEEK parts and aluminum assemblies, so a part arrives ready to assemble. And brass can go on the same order as stainless and carbon steel, aluminum, POM, nylon, and glass-fiber reinforced plastic parts for one machine.

Brass grades for CNC machining

Write the grade on the drawing. If it is hard to source in China, the quote names the equivalent we suggest and why, and you decide. More grades and equivalents are in our materials guide.

Stock size. The largest brass stock we have bought so far is 200 mm. Send the drawing and we confirm stock availability with the quote.

Brass CNC machining: how we turn and mill brass

Brass CNC turning

Fittings, nozzles, inserts, and other brass turned parts are made on our 8 CNC lathes, from Ø1 mm up to about Ø400 × 900 mm. Brass turns cleanly, so fine threads and small diameters come out without burrs. Cross holes, flats, and slots are added on turn-mill machines, so they stay true to the axis. More on our CNC turning page.

Brass CNC milling

Frames, plates, and blocks are milled on 3-axis and 3+2 machines. Brass cuts cleanly for fine features, and on a 3+2 machine, tapped holes on raised faces, thin lugs, slots, and side bores are cut in fewer clampings, so they line up. More on our CNC milling page.

Brass and copper are not the same to machine

Free-cutting brass is one of the easiest metals to machine. Pure copper is soft and gummy, tears easily, and needs sharp tools to avoid burrs, so copper parts are quoted and planned differently even when the drawing looks the same.

Tolerances and thin walls

We hold ±0.01 mm on critical brass features and machine walls down to 0.2 mm, both confirmed per feature at drawing review, before you order. Thin walls are checked at review so the part can be held without distortion while it is cut.

Precision brass machining: finishes, certificates, and inspection

Brass parts ship as machined, polished, or sandblasted, or nickel, chrome, silver, or gold plated, or passivated, all through our finishing partners. Plated parts come back to us for inspection and packing before they ship. Tell us whether a size applies before or after plating; plated parts are hard to rework, so plating requirements, including masking, belong on the drawing.

Every first article is measured against your drawing, and the first-article report is free on your first order. See tolerances and inspection and our surface finishing guide.

Certificates. We supply a material certificate for the brass used in your order, and a RoHS or REACH report on request, for example for lead-free brass. Tell us with the RFQ so the right stock and documents are ordered.

Custom brass parts from prototype to batch

Typical prototype lead time: 7–20 days, depending on part complexity. A prototype quote includes batch prices, and the batch reuses the same program and fixtures, in quantities of up to 10,000 pcs per part number. See prototype machining services and low volume CNC machining.

Shipping is EXW, FOB, DAP or DDP; transit time depends on the method and destination (about 3–40 days).

FAQ

Grades, stock size, tolerance, wall thickness, finishes, and certificates on this page are from Meili, November 2026.

Last updated: November 12, 2026