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https://engineering-supplies.com/product/12464/b-6x40-unf-nf-helical-thread-insert-tap-6-40-/
- 6.40" 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." 1/4x28
- Part Number ES-12464
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£0.00
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