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Durable Hardened-Steel Construction: Built to withstand daily use in busy workshops
Substrate: HSS‑E (M35 cobalt) for improved wear resistance
Left-hand spiral flute with right-hand cutting: Enables efficient chip evacuation and stable performance
while the tight corner radius delivers precise corner detailing without sacrificing feed rates
and improve overall boring performance
Carmex Thread Turning External Insert - UN (UNC,UNF,UNEF,UNS) - Right Hand - 16ER40UNBLU FMH Durable Hardened-Steel Construction: Built toCarmex Thread Turning External Insert UN (UNC, UNF, UNEF, UNS) Right Hand 16ER40UNBLU is a versatile external threading insert designed to cover the majority of UN thread standards. Its high quality laydown triangular geometry delivers stable, efficient cutting across a wide range of applicationsfrom basic threading tasks to the most demanding production work. Designed for professionals who need reliability in busy shops, this blue finished insert is
