Custom Forming Taps (Roll Taps / Fluteless Taps)
Chipless cold-forming taps — large sizes, oversize pitch diameters, PM-HSS and coolant-through.
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A forming tap — also called a roll tap or fluteless tap — does not cut. It cold-forms the thread by displacing material, so there are no chips, the thread profile is complete and the thread is stronger and smoother than a cut thread. Forming taps suit ductile materials such as aluminium, copper, low-carbon steel and stainless steel, and they are ideal for blind holes.
Forming taps are our highest-volume product. Typical custom requests: large diameters, oversize or undersize pitch diameters (for example M20×1.5 +0.05 mm), powder-metallurgy HSS, coolant-through holes, extended shanks and specified coatings.
Typical applications: aluminium extrusions and die castings, automotive parts, electronics hardware, fasteners, appliance structures
What we customize
- Large-diameter and fine-pitch forming taps
- Oversize / undersize pitch diameter (e.g. +0.05 mm) and special tolerance classes
- HSS, cobalt HSS (e.g. M42) and powder-metallurgy HSS
- Coolant-through, extended shanks, special shank and square sizes
- TiN, TiCN, TiAlN and other coatings
- Left-hand and non-standard pitches
No drawing? Send a sample or photos — design drawing within 24 hours.
Examples we have made
Large-size forming taps
Questions
What is the difference between a forming tap and a cutting tap?
A cutting tap removes material and produces chips. A forming tap displaces material plastically, so there are no chips and the thread is smoother and stronger. Forming taps need a ductile workpiece material and a larger pre-drilled hole than cutting taps — we calculate the correct hole size for your material.
Can you make oversize forming taps?
Yes. Oversize or undersize pitch diameters are common before plating or coating, or to fit special screws. Give us the thread size and the target pitch diameter or tolerance class.
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