Helicoil
Helicoil 8FPB Straight Flute Hand Tap 1/2"-20 Plug Uncoated 4 Flutes
Cuts 1/2"-20 UNC threads with a plug-chamfer, four-flute high-speed steel tap for STI inserts
- 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.
Highlights
- 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
Specifications
| Brand | Helicoil |
|---|---|
| Type | Hole, 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.
Also in this aisle
People compared these
Same shelf, same checkout — eight coins and a 30-minute rate lock.
