Tool-Flo 16IR 14 NPT AC22A Carbide Threading Insert (5 pcs)

The Tool-Flo 16IR 14 NPT AC22A is a new, triangular (16-size) internal right-hand threading insert ground to cut 14 TPI NPT (National Pipe Taper) threads, supplied in a factory-sealed pack of 5 made in Israel (dated 16/01/2023). The grade AC22A is Tool-Flo's (IMC Group) CVD-coated cemented carbide threading grade, featuring a TiCN/Al₂O₃ multilayer coating engineered for wear resistance and thermal stability when threading steel, stainless steel, and cast iron in both dry and wet conditions. The 16IR designation confirms the insert seats in standard IR-style toolholders accepting size-16 triangular threading inserts (e.g., Tool-Flo 16IR-series holders), with the right-hand "IR" orientation meaning the insert threads toward the chuck on an OD boring bar or internal threading bar. The 60°-profile NPT thread form produces the correct tapered 14 TPI thread geometry per ANSI/ASME B1.20.1 for pipe fitting applications, and the insert's precision-ground cutting edges ensure accurate thread form and consistent tool life across the 5-piece lot.

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