Special Threads, Gauges Intro HT TRI GP General Purpose Series SP Straight Fluted Taps for Tripod Threads FEATURES For camera tripod threads. 3P 1.5P SL HSS-E Thread is oversized. THCHT THCHT Recommended Tapping Speeds Depending On Materials PO ISO Vc (m/min) N1 ≤10 H N2 ≤10 H N3 ≤10 H ST N4 ≤10 H H 1st choice I suitable ROLL JIS-HT TRI TYPE: ST_008 CARBIDE K DCON THL LK K LU LS LONG LF HAND TAPS TRI TCTR Ø Hole Ø Code THCHT LF THL LU LS DCON K LK NOF Type Stock (tolerance) (mm) (mm) (chamfer) (mm) (mm) (mm) (mm) (mm) (mm) (mm) JIS EG (STI) - 5.15 5.19 TYU04N0KEB3 3P 62 15 26 33 6 4.5 7 3 008 f 1/4-20 - 5.15 5.19 TYU04N0KEBA 1.5P 62 15 26 33 6 4.5 7 3 008 f SPECIAL THREADS, GAUGES JIS THREAD MILLS DIES CENTER DRILLS Technical info 584