Helicoil
Helicoil 6FPB Straight Flute Hand Tap 3/8-24 UNF Plug Uncoated 4 Flutes
Straight-flute hand tap cuts 3/8-24 UNF threads in through-holes with four uncoated flutes
- TypeHole, Drill, Bore & Wire Gauges
- Thread inserts cut cleanly with 4-flute straight-flute design
- Plug chamfer starts threads easily in through-holes
- High-speed steel body resists wear during repeated use
- Bright uncoated finish suits general-purpose tapping tasks
- H2 thread limit ensures accurate 3/8-24 UNF fit
Thread repair tap for 3/8-24 UNF
The Helicoil 6FPB straight flute hand tap cuts internal threads sized 3/8-24 UNF for screw-thread-insert repairs. Four flutes and a plug chamfer suit general-purpose through-hole and blind-hole work. High-speed steel construction handles ferrous and non-ferrous materials in maintenance and assembly tasks. Right-hand threads match standard fastener orientation.
Verify hole size and material compatibility
Confirm the drilled hole matches the required tap drill for 3/8-24 UNF before starting. The uncoated bright finish performs best with cutting fluid on steel, aluminium and similar metals. Thread limit H2 fits standard STI tolerance classes. Ensure the workpiece hardness suits high-speed steel tooling.
Hand-driven thread cutting for insert installation
The 3 5/32 in overall length and 1 7/16 in thread length reach common hole depths without extension. Four flutes evacuate chips efficiently in hand or light machine tapping. Use with Helicoil STI inserts to restore stripped threads in engine blocks, gearboxes and structural brackets. Plug chamfer eases alignment at hole entry.
Highlights
- Thread inserts cut cleanly with 4-flute straight-flute design
- Plug chamfer starts threads easily in through-holes
- High-speed steel body resists wear during repeated use
- Bright uncoated finish suits general-purpose tapping tasks
- H2 thread limit ensures accurate 3/8-24 UNF fit
Specifications
| Brand | Helicoil |
|---|---|
| Type | Hole, Drill, Bore & Wire Gauges |
Questions about this item
Does the Helicoil 6FPB tap come with a handle or wrench, or must I supply one?
The tap is sold as the cutting tool only; a compatible tap wrench or T-handle is not included and must be purchased separately.
Should I choose the 3/8-24 UNF H2 plug tap or a different limit and chamfer for my job?
Select the H2 limit plug tap when you need a standard class-of-fit for 3/8-24 UNF threads and want to start threads in a through-hole or deep blind hole.
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