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Helicoil straight flute hand tap 3/8-24 UNF plug uncoated four flutes

Helicoil

Helicoil 6FPB Straight Flute Hand Tap 3/8-24 UNF Plug Uncoated 4 Flutes

SKU CH-JHQ8-HVYHB

Straight-flute hand tap cuts 3/8-24 UNF threads in through-holes with four uncoated flutes

  • Product 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.

How it compares

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

Price $26.99
Pricier than about 54% of the 2,474 comparable items (median $23.99).

Specifications

Product
Brand nameHelicoil
Product typeHole, 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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