Wexmar provides CNC tapping and threading services for internal and external threads on turned, Swiss, and milled parts. We cut threads by single-point turning on our lathes and Swiss machines, by rigid tapping on lathes and horizontal machining centers, and by thread milling where size control or material makes it the better method. Buyers searching for a CNC threading machine shop or thread cutting services near me can send work to our Canastota, New York shop near Syracuse, with nationwide shipping from the same floor.
Tapping and threading methods we use
Threads can be produced several ways, and the right method depends on thread size, class, material, and quantity:
- Single-point threading on a lathe or Swiss machine uses a form tool that takes repeated passes along the part. It produces accurate external and internal threads on turned parts, including fine pitches and larger diameters.
- Rigid tapping synchronizes spindle rotation and feed so a tap cuts a clean internal thread quickly. It is the most economical method for small and medium standard threads.
- Thread milling interpolates a rotating cutter along a helical path. It gives adjustable size, full-depth threads in blind holes, and low breakage risk in tough alloys. See our thread milling page.
When a buyer needs threading services
- Threaded shafts, studs, and fasteners with external threads
- Fittings, adapters, and connectors with both internal and external threads
- Housings, manifolds, and plates with tapped mounting holes and ports
- Instrumentation parts with fine-pitch threads
- Parts with Class 3 threads or tight pitch diameter tolerances
Wexmar machines used
External and internal threads on turned parts run on our Mazak Nexus QT200, Nexus 250, Nexus 100-II, 200 MS, Multiplex 6300Y, and Nexus 450-II lathes, our Doosan Lynx 2100A lathes, and the Boss 552. Live tooling on these lathes also taps radial and face holes. Small-diameter threaded parts up to 32 mm run on our four Maier MLK-32 Swiss machines with FMB bar feeders. Tapped holes in prismatic parts run on our six Mazak horizontal machining centers with pallet changers. The full list is on our machine list.
Typical thread capabilities
| Item | Typical capability |
|---|---|
| Thread forms | UNC, UNF, UNEF, metric coarse and fine, NPT and NPTF, SAE straight-thread |
| External thread class | 2A standard; 3A by review |
| Internal thread class | 2B standard; 3B by review |
| Metric tolerance classes | 6g / 6H standard; others by review |
| Thread position (milled parts) | 0.005 in typical; tighter by review |
| Thread finish | 63 Ra typical; 32 Ra by review |
Special forms such as Acme, stub Acme, and buttress are reviewed individually. Values shown are typical, and final capability depends on material and part geometry.
Thread relief, chamfers, and burrs
Clean thread starts matter for assembly. We chamfer thread entries per print, cut thread reliefs where the design allows, and remove the partial first thread burr so gages and mating parts start freely. When a drawing leaves thread start details open, we apply a standard 45 degree chamfer to the major diameter unless told otherwise.
Materials
We thread carbon and alloy steels, 300-series, 400-series, and PH stainless, Nitronic 50, Inconel, Monel, Hastelloy, aluminum, brass, bronze, copper, titanium, and engineered plastics. Stainless, nickel alloys, and titanium are more prone to galling and tap breakage, so we often choose single-point or thread milling methods in those materials. Soft plastics may need adjusted pitch diameters, which we review before quoting. See our materials page.
Quantity fit
Threaded parts at Wexmar range from single prototypes to production runs in the thousands. For high-volume small threaded parts, Swiss machines with bar feeders are usually the most economical route. For larger threaded components, conventional lathes with live tooling complete the part in one or two setups.
Inspection deliverables
Threads are verified with calibrated go/no-go thread plug and ring gages under ISO/IEC 17025-aligned calibration practices, and thread profiles can be checked on the Mitsubishi optical comparator. We provide CMM reports for thread positions, AS9102-format first articles, material certifications, and heat-lot traceability under an ISO 9001:2015-aligned quality system.
Getting a quote
List thread form, size, class, and depth on the drawing. You can upload a drawing for an instant estimate, and a human estimator confirms every quote before release. Call (315) 400-2654 or email ron@backwell.com, Monday through Friday, 7 a.m. to 4 p.m. Eastern.