Threads precisely made
Metric, imperial, trapezoidal and special threads, internal and external: we place your threaded parts with vetted partner shops.
CNC thread machining covers thread turning, tapping, forming and milling for internal and external threads: ISO metric, imperial, trapezoidal and special profiles. Threads are checked with go/no-go gauges to ISO 965. Strobel Industry places threaded parts made to drawing with vetted partner shops and gets back to you within 24 hours with the right shop.
What is thread machining?
Thread machining covers every cutting process used to produce internal and external threads. Whether metric ISO, imperial, trapezoidal or a special profile, the choice of process depends on material, thread size and the tolerances required.
Our partner shops use CNC-controlled processes: thread turning, rigid tapping with a synchronised spindle and thread milling. On turn-mill centres with driven tools, turned parts with threads are finished completely in one setup.
Common thread processes
Which process fits depends on material, thread size and quantity. Our partner shops choose it based on your drawing.
Thread turning
Single or multiple pass on the CNC lathe. Ideal for external threads and large diameters. The best surface quality.
Tapping
Synchronised tapping for internal threads. High process reliability in both blind and through holes.
Thread milling
Helical interpolation with a thread mill for large or unusual threads. Flexible profile design, left hand threads included.
Thread forming
Chipless thread production by cold forming. Higher strength through grain flow. Ideal for aluminium and copper alloys.
Thread cutting
Classic die or insert for external threads. Economical for standard threads at medium quantities.
Special threads
Trapezoidal, round, buttress or customer specific profiles. CAM programmed for the highest accuracy.
Why Strobel for threads?
Complete machining
Turning, drilling, threading and milling in one setup. No re-clamping errors, the highest concentricity.
Every thread type
ISO metric, UNC, UNF, BSP, trapezoidal, round threads and special profiles. One enquiry is enough, we find the right partner shop.
Thread gauging
Good shops check every thread with ring and plug gauges. If you need an inspection report, state it in your enquiry.
Target date
If it is urgent, put your target date in the enquiry. We will then look specifically for a shop that can meet it.
All materials
Steel, stainless steel, aluminium, titanium, brass, copper and plastics. Our partner shops know the right cutting data.
From 1 piece
Prototypes, small and large series. We place the order with the shop that is set up for your quantity.
Threads in every material
Steel & stainless
Free cutting steel, tempered steel, V2A/V4A. Thread turning and tapping with adapted cutting data for reliable results.
Aluminium
EN AW-6082, 7075 and other alloys. Thread forming or cutting with high surface quality and minimal burr formation.
Copper alloys
Brass, bronze and copper. Ideal materials for thread forming, with higher strength through cold working.
Titanium & special materials
Titanium grade 2/5, Inconel, Hastelloy. Dedicated cutting materials and an adapted coolant strategy for reliable thread quality.
Frequently asked questions
Q1Which thread types are possible?
All common thread types: ISO metric (M2 to M48), UNC/UNF, BSP/BSPT, trapezoidal (Tr), round threads (Rd) and customer-specific special profiles. Larger threads on request.
Q2Which tolerances are usual for threads?
Standard is 6H for internal threads and 6g for external threads to ISO 965. Tighter tolerances such as 4H/4h are possible on request.
Q3Can threads be produced in one setup with the turned part?
Yes. Our partner shops work with CNC lathes with driven tools and a C axis. This produces the turned part including threads in one setup.
Q4How are the threads inspected?
Good shops check every thread with calibrated thread ring gauges (go/no-go) or thread plug gauges. If you need an inspection report, state it in your enquiry.
Q5Which surface finishes are achievable on threads?
Thread turning achieves Ra 0.8 to 1.6 µm. Rolled or formed threads reach Ra 0.4 µm and better.
Q6Is express production possible for threaded parts?
Put your target date in the enquiry. We will then look specifically for a partner shop that can meet it. The partner states the lead time in its quote.
Enquire about threads
Send us your drawing. We review it and get back to you within 24 hours with the right partner shop.
Ready for the
next step?
Send us your drawing. We review the enquiry and pass it on to a suitable, vetted partner shop, free and without obligation .