Threading HC Full p Introduction  Threading insert identification system Full profile External / Internal Insert hand Manufacture's option E External threading R Right-hand -TF TF cutting edge I Internal threading L Left-hand -TQ With molded chipbreaker 16 E R 100 ISO - TF Pitch Type of applicable thread Insert size Metric ISO Metric Partia 11 6.35(mm) 100 Pitch 1mm M Metric 16 9.525(mm) 150 Pitch 1.5mm UN Unified 22 12.7(mm) Inch screw thread W Whitworth Symbol I.C. size (mm) 24 24 TPI BSPT Tapered pipe 20 20 TPI NPT American national tapered pipe Partial profile J External / Internal Insert hand Manufacture's option E External threading R Right-hand -TF TF cutting edge I Internal threading L Left-hand -TQ With molded chipbreaker 16 E R A60 - TF Insert size Pitch Pitch 06 3.97084.76 A60 60˚ Type (Partial profile)0.5~1.5mm 60˚ Type (Partial profile)60°6001Corner-R(RE)=0.1mm 11 6.35169.525 60° G60 60˚ Type (Partial profile)1.75~3mm 1.0~2.5mm55˚ Type (Partial profile) 22 12.70SymbolI.C. size (mm) AG60 60˚ Type (Partial profile)0.5~3mm 55° 5501 Corner-R(RE)=0.1mm28~11 TPI A55 55˚ Type (Partial profile)40~16 TPI Vertexangle Partial profile 55° G55 55˚ Type (Partial profile)14~8 TPI AG55 55˚ Type (Partial profile)40~8 TPI Vertexangle Partial profile Note) Pitch and threads per inch of an insert without wiper depend on the size of insert. Example of shape of A, G and AG PDX Dimension(mm) RE Description RE PDX HC 16ER A60-TF 0.06 1.00 1.5 16ER G60-TF 0.22 1.60 2.6 16ER AG60-TF 0.06 1.60 2.7 Corner-R(RE) selection for partial profiling insert External threading Internal threading Metricunified RE ≤ 0.1443TP RE ≤ 0.0720TP Parallel pipe (For both external and Internal thread) (Whitworth) Tapered pipe RE ≤ 0.1373TP RE: Corner-R TP: Pitch (= —25— n.4 ) n: TPI J2