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Straight-flute hand tap, bright uncoated finish, four flutes

Helicoil

Helicoil 8FPB Straight Flute Hand Tap 1/2"-20 Plug Uncoated 4 Flutes

SKU CH-XWDD-Q83P9

Cuts 1/2"-20 UNC threads with a plug-chamfer, four-flute high-speed steel tap for STI inserts

  • Product typeHole, Drill, Bore & Wire Gauges
  • Cuts UNC threads in 1/2"-20 holes
  • Plug chamfer starts threads smoothly in through-holes
  • Four straight flutes clear chips efficiently during tapping
  • High-speed steel body resists wear in repeated use
  • Bright uncoated finish suits general-purpose threading jobs

Thread Repair Tap

The Helicoil 8FPB is a straight-flute hand tap designed for creating Screw Thread Insert (STI) holes in UNC 1/2"-20 threads. It suits mechanics and engineers who repair stripped or damaged threads in automotive and general machinery applications.

H3 Limit and Four Flutes

The tap works to an H3 thread limit with four flutes and a plug chamfer, giving enough chip clearance for through-holes and moderate-depth blind holes. High-speed steel construction handles standard ferrous and non-ferrous materials but will wear faster in abrasive alloys or high-volume production runs.

Uncoated High-Speed Steel

Bright, uncoated high-speed steel means the cutting edges are ready for general-purpose tapping without a coating that could mask wear. Buyers who need extended tool life in stainless steel or titanium should select a coated alternative.

How it compares

Measured against everything we stock in Utility & Specialty Hand Tools, at today’s prices. Recalculated every night.

Price $36.99
Pricier than about 65% of the 2,474 comparable items (median $23.99).

Specifications

Product
Brand nameHelicoil
Product typeHole, Drill, Bore & Wire Gauges

Questions about this item

Will the 1/2"-20 UNC thread size match the holes in my older tap wrench?

The tap is cut to 1/2"-20 UNC so it will fit any wrench or holder made for that standard thread size.

How can I verify the 3 37/64 in overall length is correct after I receive it?

Measure from the tip of the flutes to the end of the square shank; it should read 3 37/64 inches.

Does the box include a tap wrench or only the 4-flute H3 plug tap?

Only the uncoated high-speed steel tap is supplied; a compatible tap wrench must be purchased separately.

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