VT machining offers CNC Tapping for C268 Brass (UNS C26800 / CuZn33 / Yellow brass), typically supplied annealed or half-hard. Slightly cheaper, higher-zinc alternative to C260 for forming.
CNC Tapping Notes for C268 Brass
C268 Brass is ductile enough for form (roll) tapping, which gives stronger, chip-free threads; cut taps are used where the drawing or material condition requires.
For estimating, a 100 × 100 × 10 mm block of C268 Brass weighs about 0.85 kg.
Starting Parameters for CNC Tapping C268 Brass
| Cutting speed (carbide) | 10-15 m/min |
|---|---|
| Recommended tap | Form (roll) tap — chipless |
| Tap drill for M8×1.25 | Ø7.4 mm (form tap) |
| Spindle speed, M8 | 400-600 rpm |
| Insert / tool class | ISO N — sharp, polished, uncoated or DLC |
| Coolant | Dry or light emulsion; zero-rake tools to prevent grabbing |
Starting values for C268 Brass, Annealed or half-hard; optimised on the first article.
Full material data for C268 Brass (UNS C26800 / CuZn33 / Yellow brass) is on the CNC Milling C268 Brass page.
More on CNC Tapping Brass
Finishing options, quality documentation and general cnc tapping guidance for all brass grades are on our CNC Tapping Brass page.
No drawing yet? Sketch the part in our free 3D + 2D builder and send it with your RFQ.
Quoting CNC Tapping C268 Brass
Send a STEP/IGES model or PDF drawing, confirm C268 Brass and its condition (we usually see it supplied annealed or half-hard), the quantity, critical tolerances and any finish or certificate requirements.
C268 Brass in Other Processes
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Send the drawing, the C268 Brass condition and the quantity — pricing and lead time come back the same or next business day.
Request a QuoteFrequently Asked Questions
What is the typical lead time and minimum order for CNC Tapping C268 Brass?
CNC Tapping prototypes for C268 Brass can be produced quickly and scaled to series production. Send your drawing and quantity and we will advise lead time and any minimum order.
What is CNC Tapping C268 Brass and how is it done?
CNC Tapping C268 Brass refers to rigid CNC tapping cuts internal threads in sync with spindle feed for precise, repeatable thread engagement. Applied to C268 Brass — free-machining with good conductivity — VT machining produces each part to your CAD drawing, selecting parameters from your tolerance, finish and quantity requirements.
What tolerances can you hold for CNC Tapping C268 Brass?
Achievable tolerances for C268 Brass machining depend on the alloy, geometry and feature size. Milling holds positional and dimensional tolerances to around ±0.01 mm, tighter with precision setups. Exact figures are confirmed against your drawing callouts.
What surface finish is achievable on C268 Brass with CNC Tapping?
Surface finish on C268 Brass is controlled to your specification; we confirm the achievable Ra against your callout.