Insert, TCMT-21.51 Carbide

TCMT-21.51 carbide insert is a 60° triangle with a 7° relief. The center hole is a 40°-60° single countersink, and there is a single-sided chip breaker. It has an inscribed circle (IC) of 0.25" (1/4"), a thickness of 0.094" (3/32"), and a corner (nose) radius of 0.0156" (1/64"). The insert is designated TCMT21.51 (ANSI) or TCMT110204 (ISO).  Inserts are sold individually—no need to buy a pack of 10 inserts. *NOTE: Make sure you get the correct inserts and retaining screws for your indexable turning tools. Our chart of indexable inserts shows which inserts and which screw to use with each of our indexable tools.