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Small metal plug hand tap with threaded shaft and flutes

Drill America

Drill America #8-64 HSS Plug Hand Tap 64

SKU CH-PHFB-JW5N5

#8-64 HSS plug hand tap cuts internal threads in through holes using high-speed steel

  • Versatile for hand or powered tapping across most materials
  • Plug style cuts threads cleanly in through holes
  • High-speed steel construction resists wear during repeated use
  • Taper option starts threads square to the workpiece
  • Bottoming tap reaches full depth in blind holes

Drill America #8-64 Plug Hand Tap

This new Drill America #8-64 HSS plug hand tap is designed for threading through-holes in a wide range of materials. It suits machinists, maintenance technicians and hobbyists who need a reliable tool for general machine tapping or CNC operations. The high-speed steel construction provides durability for repeated use in workshop environments.

Sustained cutting performance

Under continuous machine or CNC tapping the high-speed steel body maintains its cutting geometry longer than carbon-steel alternatives. The plug chamfer reduces torque build-up in through-holes, allowing steadier feed rates without excessive heat accumulation. This behaviour supports consistent thread quality across production runs or extended maintenance sessions.

Thread standard limitations

The #8-64 UNF thread form restricts use to components requiring that specific diameter and pitch. It cannot produce metric, coarse or larger-diameter threads, so a separate tap is needed for each different size. California Proposition 65 warnings indicate the product contains chemicals known to cause cancer and reproductive harm, requiring appropriate handling precautions.

Highlights

  • Versatile for hand or powered tapping across most materials
  • Plug style cuts threads cleanly in through holes
  • High-speed steel construction resists wear during repeated use
  • Taper option starts threads square to the workpiece
  • Bottoming tap reaches full depth in blind holes

Specifications

BrandDRILL AMERICA

Questions about this item

Does the #8-64 HSS plug hand tap generate much heat or noise when used continuously in a CNC machine?

The tap is made from high-speed steel and is designed for general machine or CNC tapping; heat and noise depend on cutting speed, lubrication and workpiece material rather than the tap itself.

What holder or collet is required to run this #8-64 plug tap in a drill press or CNC spindle?

The tap has a standard square shank that fits a matching tap wrench, adjustable tap holder or ER collet with a square drive — choose the holder size that matches the tap's shank dimensions.

Can this #8-64 plug tap cut threads in an existing #8-64 hole made with an older carbon-steel tap?

Yes, the plug style is intended for through holes and will cleanly cut or chase #8-64 threads in most materials, including holes previously tapped with carbon-steel tools.

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