STI Thread Taps UNC Sizes

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SCREW THREAD INSERT (STI) TAPS Recoil Taps or Helicoil™ Taps or STI Taps or Screw Thread Insert Taps are used with Recoil Inserts or Helicoil™ Inserts only. Recoil Taps are manufac tured to precise standards from High Speed steel (HSS) with ground threads and are available in Taper, Intermediate and Bottoming leads. They have a large diameter but the same pitch as a standard tap in order to accommodate the Recoil Inserts. Spiral Point and Spiral Flute machine taps are also available. For all spark plug applications pilot nose taps are available. The Recoil thread inserts when installed into a correctly tapped hole will provide the applicable internal thread tolerance for the installed bolt. Show more