Oversized h stock standard, ) check stock EU, f check stock JP, m stock exhaustion HT CTC Intro GP General Purpose Series Straight Fluted Taps for Metal Thin-Walled Conduit Threads SP FEATURES 5PHSS-E For steel conduit threads.Thread angle is 80°. SL THCHT Thread symbol is CTC. Recommended Tapping Speeds Depending On Materials PO ISO Vc (m/min) P1 ≤10 H P2 ≤10 H H 1st choice I suitable ST ROLL JIS-HT CTC TYPE: ST_035 K CARBIDE DCON THL LK K LS LONG LF HAND TAPS CTC TCTR Ø Hole Ø(tolerance)(mm)(mm)CodeTHCHT(chamfer)LF LT THL LU LS DCON K LK(mm)(mm)(mm)(mm)(mm)(mm)(mm)(mm)NOFType Stock JIS CTC19-16 - 18 18.11 TYCC190HEB5 5P 105 - 23 - 50 15 12 15 4 035 f EG (STI) CTC25-16 - 24.3 24.41 TYCC250HEB5 5P 125 - 24 - 58 19 15 18 4 035 f CTC31-16 - 30.75 30.81 TYCC310HEB5 5P 145 - 26 - 67 24 19 22 4 035 f CTC39-16 - 37 37.11 TYCC390HEB5 5P 165 - 27 - 76 30 23 26 4 035 f SPECIALTHREADS, GAUGES JIS THREAD MILLS DIES CENTER DRILLS Technical info 591