Custom Trapezoidal & ACME Taps (Tr / ACME / Multi-Start)
Tr, ACME, asymmetric, multi-start and tapered trapezoidal taps — made to your nut drawing.
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Trapezoidal (Tr, 30°) and ACME (29°) threads are used in lead screws and nuts, valves, lifting and transmission mechanisms.
We have made symmetric and asymmetric trapezoidal taps, double-, triple- and four-start versions, small narrow-profile, narrow-body and tapered trapezoidal taps. We supply roughing + finishing sets to your nut drawing, with matching thread plug gauges.
Typical applications: lead screw nuts, valve stem nuts, lifts and jacks, machine-tool and automation drives
What we customize
- Tr, ACME, Stub ACME and non-standard trapezoidal forms
- Multi-start (2 / 3 / 4 starts), lead to drawing
- Asymmetric trapezoidal profiles
- Tapered, narrow-body and small narrow-profile versions
- Roughing + finishing tap sets
- Matching thread plug gauges
No drawing? Send a sample or photos — design drawing within 24 hours.
Examples we have made
Asymmetric trapezoidal taps
Asymmetric four-start trapezoidal nut taps
Small narrow-profile trapezoidal taps
Narrow-body double-start trapezoidal taps
Tapered trapezoidal taps
Questions
Can multi-start trapezoidal nuts be tapped?
Yes. A multi-start tap is designed for the lead and the number of starts and cuts all starts in one pass; for long leads we usually supply a roughing and a finishing tap. Send pitch, number of starts (or lead), major diameter and nut length.
Are Tr and ACME threads interchangeable?
No. Tr is a metric 30° form and ACME is an inch 29° form with different pitches and tolerances. Tell us the standard, or send a screw sample and we will draw it from the part.
Send your drawing — get a tap design and quote within 24 hours
No drawing? A sample, photos or the thread data are enough. WhatsApp / WeChat +86 135 8099 9993 · export@supertap.cn