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All Products  ➞ Threaded Inserts ➞ PowerCoil® ➞ STI Taps ➞ Machine Taps ➞ UNF

1/4" x 28 STI HSS Cobalt UNF Spiral Point Tap

Part Number:3534-1/4SP
Brand:PowerCoil
Barcode:9326518074724
Diameter (inch):1/4
Lead:Spiral Point
Length (mm):69
Pitch (tpi):28
TPI:28

About this item:
  • 1/4" x 28 STI HSS Cobalt UNF Spiral Point Tap
  • Unified National Fine (UNF).
  • HSS-Co Spiral Point (Gun Nose) 3B Tolerance Screw Thread Insert (STI) Tap.
  • PowerCoil wire thread inserts are installed into oversize tapped holes.
  • Only PowerCoil STI (Screw Thread Insert) Taps are suitable for use with PowerCoil Wire Thread Inserts.
  • STI Taps have a larger diameter, than standard taps, but the same pitch to accommodate the wire thread insert.
  • Once the insert is installed in the tapped hole it creates the desired internal thread tolerance for the installed bolt or stud.