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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.

How it compares

Measured against everything we stock in Garden Hoses & Pipe Tubing, at today’s prices. Recalculated every night.

Price $12.99
Cheaper than about 70% of the 973 comparable items (median $21.99).

Specifications

Product
Brand nameDRILL 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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