1/4x19 BSP Helical Thread Insert Tap Second lead

1/4 - 19 BSP Use to produce threads for helical coil wire screw thread inserts only • S.T.I. taps are oversized so the thread produced accepts a helical coil wire screw thread insert of the same nominal size and pitch • Taps are marked with the nominal size and pitch of the bolt to be used • Taps are marked with “S.T.I.” Compatible with HeliCoil.

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