Special Threads, Gauges Intro HT TRI GP General Purpose Series SP Straight Fluted Taps for Tripod Threads FEATURES SL HSS-E 3P 1.5P For camera tripod threads.Thread is oversized. THCHT THCHT PO Recommended Tapping Speeds Depending On Materials ISO Vc (m/min) N1 ≤10 H N2 ≤10 H ST N3 ≤10 H N4 ≤10 H H 1st choice I suitable ROLL JIS-HT TRI TYPE: ST_008 CARBIDE K DCON THL LK K LONG LU LS LF HAND TAPS TRI TCTR Ø Hole Ø(tolerance)(mm)(mm)CodeTHCHT(chamfer)LF(mm)THL(mm) LU(mm) LS DCON K(mm)(mm)(mm)LK(mm)NOFType Stock 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