Diameter range you can plan around
Swiss-type roughly Ø0.5–32 mm; conventional chuck turning up to about Ø250 mm — confirm diameter and length via DFM.
Precision Custom Screw Machining & Threaded Components
Swiss-type and multi-tasking turning for print-to-order fasteners and threaded parts — from micro diameters to larger chuck work — with thread fit and linear limits confirmed via DFM.
Custom screw proof points
Thread fit and secondary ops
Metric, UNC/UNF, BSW/BSF, and custom forms including Acme; optional thread rolling, heat treat, and anti-loosening patches when ordered as turnkey.
Gauges and CMM scoped to the print
Go/No-Go thread gauging plus ZEISS CMM or optical checks for critical geometry — scope follows the agreed inspection plan.
What we provide
Print-to-order custom screws, studs, threaded pins, and related fasteners — not catalog-only supply. Swiss-type and chuck turning with live tooling for cross-milling, drilling, tapping, and slotting in one automated setup. Thread method (cut vs roll), heat-treat sequence, and coatings are planned before release so fit classes such as 4H / 6g stay intentional.
Process flow
RFQ / CAD review
Upload STEP/IGES and 2D PDF for thread class, pitch, undercut, and critical diameters.
DFM
We review Swiss vs chuck strategy, thread method (cut vs roll), and which limits need gauge or CMM verification.
Material & process planning
Bar stock, heat-treat sequence, and secondary ops (roll, coat, patch) planned before release.
Machining
Swiss or chuck turning with live tooling; setup checks after tool or collet changes.
Inspection
Go/No-Go thread gauging plus CMM/optical checks for critical geometry as scoped on the drawing.
Shipping
Protected packaging; heat treat and anti-loosening patches when ordered as turnkey.
Custom screw machining specifications
| Item | Capability |
|---|---|
| Processes | Swiss-type screw machining; chuck turning; live-tool mill/drill/tap; optional thread rolling |
| Diameter range (ref.) | Swiss about Ø0.5–32 mm; chuck turning up to about Ø250 mm — confirm per part |
| Typical tolerance | Linear capability to ±0.005 mm on suitable features; thread fit per print (e.g. 4H / 6g) — confirmed via DFM |
| Thread forms | Metric, UNC/UNF, BSW/BSF, Acme and other print-defined forms |
| Materials | Stainless, titanium, aluminum, Inconel (suitable grades), brass/bronze, PEEK, PTFE, POM, nylon — see material pages |
| File formats | STEP / STP, IGES; 2D PDF strongly recommended for threads and fit classes |
| Inspection options | Calibrated Go/No-Go thread gauges; ZEISS CMM and optical metrology as required; FAI / MTR on request |
Materials and surface finishes
Steel CNC machining
Stainless and alloy fasteners for structural and industrial use.
Aluminum CNC machining
Aircraft-grade aluminum threaded hardware and fittings.
Copper CNC machining
Brass and phosphor bronze screws and connectors.
Plastic CNC machining
PEEK, PTFE, POM, and nylon threaded components.
CNC surface finishes
Coatings and related finishes with dimensional notes for threaded parts.
CNC materials guide
Grade comparison before you lock the print.
Print-to-order fastener evidence
Metal and engineering-plastic fasteners with patch coatings, knurls, and specialty heads show the range we machine to print — including PEEK and stainless grades. Geometry, thread class, and secondary ops are locked in DFM before bar is released.
Swiss turning and thread metrology
Swiss / live-tool turning
Bar work with simultaneous tools and coolant for diameters, grooves, and threads in one setup.
CMM on critical threads
ZEISS probing for critical diameters and geometry when gauges alone are not enough.
Tolerance and quality
Thread integrity is verified with calibrated Go/No-Go plug and ring gauges according to the agreed inspection plan — batch sampling or 100% gauging when that scope is specified for the job, not as a blanket slogan. Critical linear and geometric features can be checked on ZEISS CMM and optical equipment per drawing. Linear ±0.005 mm and thread classes such as 4H / 6g apply only where print and DFM confirm feasibility. FAI and MTR are available on request. See CNC machining quality control.
Applications
Print-to-order fasteners
Non-standard screws, studs, and threaded pins made to your geometry — not catalog-only supply.
Micro and instrument hardware
Small-diameter Swiss work for electronics, lab, and compact assemblies.
High-strength alloys
Titanium, stainless, and specialty alloys where thread fit and secondary ops must stay under one process owner.
Custom screw machining FAQ
Do you only make standard catalog screws?
Most of our fastener work is print-to-order custom geometry. Upload STEP/IGES and PDF drawings and we manufacture to your specified forms and tolerances after DFM.
What is your minimum diameter?
Swiss-type capability down to about Ø0.5 mm on suitable materials and lengths — confirmed via DFM for each print.
How do you verify thread fit?
Calibrated Go/No-Go thread gauges for the classes on your print, with CMM or optical checks on critical geometry when the inspection plan requires it.
Can you add heat treat and anti-loosening patches?
Yes when ordered as turnkey: thread rolling, heat treatment / embrittlement relief where applicable, and pre-applied anti-loosening patches. Scope is confirmed at quote.
Ready to start your CNC project?
Upload your CAD files for a free DFM review and quotation. We typically respond within one business day.