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IR/L-NPT : Internal NPT (National Pipe Threads) full profile laydown threading inserts. IR/L - ground periphery and rake, IRB - with a chipformer and peripherally ground, IRM - with a chipformer, for steam, gas and water pipes.(-)Internal NPT (National Pipe Threads) Full Profile Laydown Threading Inserts for Steam, Gas and Water Pipes(+)
Representative Image
Internal left-hand shown
 
Representative Image
Internal left-hand shown
 
 NPT (INT.)THREAD TOL.
  Designation  GIFUT5IC TPI  RE INSL PDY PDX HAND CICT  SC AN CBMD CEDC CNC COATP D1 FTDZ GRDMFG IFS NIS S S1 SSC  THFT GICATGIREMgiicTough ‹————› Hard
Grade & Vc     Click on Grade No. for Cutting Speed
  06IR 27 NPT    0.15727.0.0016.271.02.02R~1T~~INT~~Z~3~3~~~~IC228 ~3~1~~~6~NPT60~Steel~Stainless Steel~Cast Iron~Hard Materials~ Superalloys and titanium~Carbide~TiCN+TiN ~5901382 1IC228 
  08IR 18 NPT    0.19718.0.0024.324.02.03R~1T~~INT~~Z~3~3~~~~IC228 ~3~1~~~8~NPT60~Steel~Stainless Steel~Cast Iron~Hard Materials~ Superalloys and titanium~Carbide~TiAlN ~5996066 2IC228 IC908 
  11IL 18 NPT    0.25018.0.0024.433.03.04L~1T~~INT~~Z~3~3~~~~IC908 ~3~1~~~11~NPT60~Steel~Stainless Steel~Cast Iron~Hard Materials~ Superalloys and titanium~Carbide~TiAlN ~5902862 1IC908 
  11IR 18 NPT    0.25018.0.0024.433.03.04R~1T~~INT~~Z~3~3~~~~IC250 ~3~1~~~11~NPT60~Steel~Stainless Steel~Cast Iron~Hard Materials~ Superalloys and titanium~Carbide~TiAlN ~5994822 2IC250 IC908 
  11IRB 18 NPT    0.25018.0.0024.433.03.04R~1T~~INT~~B~3~3~~~~IC908 ~3~1~~~11~NPT60~Steel~Stainless Steel~Cast Iron~Hard Materials~ Superalloys and titanium~Carbide~TiAlN ~3303072 1IC908 
  11IL 14 NPT    0.25014.0.0027.433.03.04L~1T~~INT~~Z~3~3~~~~IC250 ~3~1~~~11~NPT60~Steel~Stainless Steel~    Carbide~TiCN+TiN ~5995332 1IC250 
  11IR 14 NPT    0.25014.0.0027.433.03.04R~1T~~INT~~Z~3~3~~~~IC1007~3~1~~~11~NPT60~Steel~Stainless Steel~Cast Iron~Hard Materials~ Superalloys and titanium~Carbide~TiAlN ~5902030 3IC250 IC908 IC1007 
  16IL 27 NPT    0.37527.0.0020.649.03.03L~1~~INT~~Z~~~~~~IC250 ~~~~~~NPT60~Steel~Stainless Steel~    Carbide~TiCN+TiN ~3409704 1IC250 
  16IR 27 NPT    0.37527.0.0020.649.03.03R~1T~~INT~~Z~3~3~~~~IC908 ~3~1~~~16~NPT60~Steel~Stainless Steel~Cast Iron~Hard Materials~ Superalloys and titanium~Carbide~TiAlN ~5996115 1IC908 
  16IR 18 NPT    0.37518.0.0024.649.03.04R~1T~~INT~~Z~3~3~~~~IC908 ~3~1~~~16~NPT60~Steel~Stainless Steel~Cast Iron~Hard Materials~ Superalloys and titanium~Carbide~TiAlN ~5902181 1IC908 
  16IRM 14 NPT      0.37514.0.0020.649.04.05R~1T~~INT~~B~3~3~~~~IC1007~3~1~~~16~NPT60~Steel~Stainless Steel~Cast Iron~Hard Materials~ Superalloys and titanium~Carbide~TiAlN ~5921256 With pressed chipformer 4IC250 IC808 IC908 IC1007 
  16IRB 14 NPT      0.37514.0.0027.649.04.05R~1T~~INT~~B~3~3~~~~IC908 ~3~1~~~16~NPT60~Steel~Stainless Steel~Cast Iron~Hard Materials~ Superalloys and titanium~Carbide~TiAlN ~5902601 With pressed chipformer 1IC908 
  16IL 14 NPT    0.37514.0.0031.649.04.05L~1T~~INT~~Z~3~3~~~~IC908 ~3~1~~~16~NPT60~Steel~Stainless Steel~Cast Iron~Hard Materials~ Superalloys and titanium~Carbide~TiAlN ~5903353 1IC908 
  16IR 14 NPT    0.37514.0.0031.649.04.05R~1T~~INT~~Z~3~3~~~~IC1007~3~1~~~16~NPT60~Steel~Stainless Steel~Cast Iron~Hard Materials~ Superalloys and titanium~Carbide~TiAlN ~5993037 4IC228 IC250 IC908 IC1007 
  16IRB 11.5 NPT      0.37511.5.0035.649.04.06R~1T~~INT~~B~3~3~~~~IC908 ~3~1~~~16~NPT60~Steel~Stainless Steel~Cast Iron~Hard Materials~ Superalloys and titanium~Carbide~TiAlN ~5902828 With pressed chipformer 1IC908 
  16IRM 11.5 NPT      0.37511.5.0035.649.04.06R~1T~~INT~~B~3~3~~~~IC1007~3~1~~~16~NPT60~Steel~Stainless Steel~Cast Iron~Hard Materials~Non Ferrous Metals~Superalloys and titanium~Carbide~TiAlN ~5921242 With pressed chipformer 4IC508 IC808 IC908 IC1007 
  16IL 11.5 NPT    0.37511.5.0035.649.04.06L~1T~~INT~~Z~3~3~~~~IC250 ~3~1~~~16~NPT60~Steel~Stainless Steel~Cast Iron~Hard Materials~ Superalloys and titanium~Carbide~TiAlN ~5990607 2IC250 IC908 
  16IR 11.5 NPT    0.37511.5.0035.649.04.06R~1T~~INT~~Z~3~3~~~~IC1007~3~1~~~16~NPT60~Steel~Stainless Steel~Cast Iron~Hard Materials~ Superalloys and titanium~Carbide~TiAlN ~5901939 3IC50M IC908 IC1007 
  16IRM 8 NPT      0.3758.0.0047.649.05.07R~1T~~INT~~B~3~3~~~~IC1007~3~1~~~16~NPT60~Steel~Stainless Steel~Cast Iron~Hard Materials~ Superalloys and titanium~Carbide~TiAlN ~5903459 With pressed chipformer 3IC808 IC908 IC1007 
  16IRB 8 NPT      0.3758.0.0043.649.05.07R~1T~~INT~~B~3~3~~~~IC908 ~3~1~~~16~NPT60~Steel~Stainless Steel~Cast Iron~Hard Materials~ Superalloys and titanium~Carbide~TiAlN ~5902827 With pressed chipformer 1IC908 
  16IL 8 NPT    0.3758.0.0043.649.05.07L~1T~~INT~~Z~3~3~~~~IC250 ~3~1~~~16~NPT60~Steel~Stainless Steel~Cast Iron~Hard Materials~ Superalloys and titanium~Carbide~TiAlN ~5903351 2IC250 IC908 
  16IR 8 NPT    0.3758.0.0043.649.05.07R~1T~~INT~~Z~3~3~~~~IC08 ~3~1~~~16~NPT60~Steel~Stainless Steel~Cast Iron~Hard Materials~Non Ferrous Metals~Superalloys and titanium~Carbide~TiAlN ~5901938 3IC250 IC08 IC908 
  22IR 11.5 NPT 2M      0.50011.5.0035.866.09.14R~2T~~INT~~Z~3~3~~~~IC908 ~3~1~~~22~NPT60~Steel~Stainless Steel~Cast Iron~Hard Materials~ Superalloys and titanium~Carbide~TiAlN ~5902445 Multi-tooth 1IC908 
  27IR 11.5 NPT 3M      0.62511.5.00351.083.13.22R~3T~~INT~~Z~3~3~~~~IC908 ~3~1~~~27~NPT60~Steel~Stainless Steel~Cast Iron~Hard Materials~ Superalloys and titanium~Carbide~TiAlN ~5902444 Multi-tooth 1IC908 
  27IR 8 NPT 2M      0.6258.0.00471.083.12.20R~2T~~INT~~Z~3~3~~~~IC908 ~3~1~~~27~NPT60~Steel~Stainless Steel~Cast Iron~Hard Materials~ Superalloys and titanium~Carbide~TiAlN ~5902448 Multi-tooth 1IC908 
For Insert Identification System, click on "More Info"
National Pipe Threads ANSI/ASME B1.20.1-1983


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