Tooling application table (Internal thread)

Thread typesMetric MUnified UN, UNC UNF, UNEFParallel pipe G(PF) Rp(PS)Whitworth WTapered pipe Rc(PT) (BSPT)American national tapered pipe NPT30˚ trapezoidal Tr
Thread shapeExternal Internal TP 60˚External Internal TP 60˚External Internal TP 55˚External Internal TP 55˚External Internal TP 55˚ 1˚47'External Internal TP 60˚ 1˚47'External Internal TP 30˚
Pitch Toolholder shapemmTPITPITPITPITPImm
(check EZ Bar special supplement, page 13)
Partialprofile EZT0.5~1.7536~1628~1924~1828~1918~14-
VNT
Partialprofile0.75~1.528~18-----
SIN Fullprofile0.5~5.024~819~1116~1128~1118~11.5-
Partial profile0.5~5.048~528~1140~528~11-2.0~5.0
CIN Full profile1.0~5.024~819~1116~1114~1118~11.5-
Partial profile0.5~5.048~528~1140~528~11-2.0~5.0
KITG Partialprofile0.5~3.048~828~1124~828~11--
STWP
Partialprofile0.75~3.528~8-----

JJ

For parallel pipe and tapered pipe, the average values are only to be used if specifically recommendation.