Special Threads, Gauges Intro SL LH Tr GP General Purpose Series SP Left Spiral Fluted Taps for Trapezoidal Left Hand Threads FEATURES Spiral fluted tap for through hole left hand trapezoidal LH LONG threads. SL HSS-E THCHT The thread angle is 30°. LEFT HAND Thread symbol is Tr. Recommended Tapping Speeds Depending On Materials PO ISO Vc (m/min) P1 ≤5 H P2 ≤5 H ST H 1st choice I suitable ROLL JIS-SL LH Tr TYPE: SL_001 CARBIDE K DCON THL LK K LONG LF HAND TAPS Tr Ø Hole Ø Code THCHT LF THL DCON K LK NOF Type Stock (mm) (mm) (chamfer) (mm) (mm) (mm) (mm) (mm) JIS EG (STI) TR10X2 8.1 8.18 ZYT10Q0HEB 26P 160 70 7.8 6 9 3 001 f TR12X3 9.2 9.24 ZYT12S0HEB 23P 190 95 9 7 10 3 001 f TR12X2 10.1 10.18 ZYT12Q0HEB 30P 170 80 9 7 10 3 001 f SPECIAL TR14X3 11.2 11.24 ZYT14S0HEB 23P 190 95 11 9 12 3 001 f THREADS, GAUGES TR16X4 12.25 12.28 ZYT16U0HEB 22.5P 220 120 12 9 12 3 001 f JIS TR16X3 13.2 13.24 ZYT16S0HEB 25P 200 100 13 10 13 3 001 f TR18X4 14.25 14.28 ZYT18U0HEB 22.5P 220 120 14 11 14 4 001 f THREAD TR20X4 16.25 16.28 ZYT20U0HEB 24.5P 230 130 16 12 15 4 001 f MILLS TR22X5 17.3 17.34 ZYT22W0HEB 22P 250 150 18 14 17 4 001 f TR24X5 19.3 19.34 ZYT24W0HEB 24P 260 160 19 15 18 4 001 f TR25X5 20.3 20.34 ZYT25W0HEB 25P 270 170 20 15 18 4 001 f DIES TR26X5 21.3 21.34 ZYT26W0HEB 27P 280 180 21 17 20 4 001 f TR28X5 23.3 23.34 ZYT28W0HEB 28P 290 190 22 17 20 4 001 f TR30X6 24.3 24.38 ZYT30Y0HEB 25P 300 200 24 19 22 4 001 f CENTER DRILLS Technical info 582