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Taps & Dies

Mastering Tapping: Top Tips to Prevent Tap Breakage and Boost Efficiency

by WESTport Corporation
Tap breakage is a common challenge in machining, leading to increased downtime, higher costs, and potential damage to workpieces. Understanding the causes of tap breakage and implementing effective prevention strategies...

USCTI Table 301B

by westportcorp Admin
USCTI Table 301B - Standard System of Marking General As a minimum , taps will be marked with the threads per inch or pitch, the proper product thread designation indentfying...

USCTI Table 302 - Standard Tap Dimensions - Ground Thread

by westportcorp Admin

USCTI Table 302A - Optional Neck & Shortened Thread Length Tap

by westportcorp Admin

USCTI Table 303 - Special Fine Pitch Taps, Short Series - Ground

by westportcorp Admin

USCTI Table 311 - Standard Pipe Dimensions, Straight & Taper - Ground Thread

by westportcorp Admin

Chattering on Tapped Thread

by westportcorp Admin
Too Free Cutting Reduce cutting angle. Reduce amount of thread relief. Tool Conditions Avoid too narrow a land. Do not grind the bottom of the flute.

Chipping

by westportcorp Admin
Incorrect Tap Selection Reduce cutting angle. Use different kind of high-speed steel tap. Reduce hardness of the tap. Increase chamfer length. Avoid chip packing in the flutes or in the...

Oversize Internal Diameter

by westportcorp Admin
Galling Apply surface treatment such as steam oxide, TiN, or chrome. Use recommended lubricant. Reduce tapping speed. Use correct tap for the material being tapped. Hole Size Use minimum hole...

Oversize Pitch Diameter

by westportcorp Admin
Chip Packing Use spiral point or spiral fluted taps. Reduce number of flutes to provide extra chip room. Use larger hole size. If tapping a blind hole, allow deeper holes...

Undersize Internal Diameter

by westportcorp Admin
Hole Size  Use maximum drill size.

Undersize Pitch Diameter

by westportcorp Admin
Damaged Thread Undersize Pitch Diameter> Use proper reversing speed to avoid damaging tapped thread on the way out of the hole. Incorrect Tap Use oversize taps: Use for cutting materials...

Torn or Rough Thread

by westportcorp Admin
Chamfer Too Short Increase chamfer length.  Chip Packing Use spiral pointed or spiral fluted taps. Use larger drill size. Galling Use thread relieved taps. Reduce land width. Apply surface treatment...

Wear

by westportcorp Admin
Incorrect Tap Selection Use specially designed taps for tapping heat treated material. Change to a type of high-speed steel tap that contains vanadium. Apply special surface treatment such as steam...

Selecting Taps

by westportcorp Admin
When selecting standard taps for your tapping application, there are three basic factors for you to consider: The Material to be Threaded For optimum results, select taps that are recommended...

Tapping Hints

by westportcorp Admin
You can cut materials up to about half as hard as the cutting tool. Keep Tap Drill sharp! A dull drill can work harden the material you are tapping. Hand...

Tap Drill Sizes for Unified Inch Screw Threads

by westportcorp Admin

Tap Drill Sizes for Metric M-Profile Screw Threads

by westportcorp Admin

Taps & Dies

by westportcorp Admin

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