$12.88$11.71 Ex. GST
1/4″ x 28 STI UNF Intermediate Tap
Unified National Fine (UNF).
Carbon Steel Intermediate Lead Screw Thread Insert (STI) Tap.
Designed with economy in mind ProThread carbon steel taps allow the tapping of worn and damaged threads where a heavier duty HSS tap is not required.
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.
Category: Threaded Inserts, ProThread , STI Taps, UNF
Pitch (tpi): 28
Lead: Intermediate
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