
Straight Fluted Taps Intro ZELX MOLD NPT MS Material Specific Series SP Straight Fluted Taps for American Taper Pipe Threads, for Hard Materials (<45HRC) FEATURES Material specific for blind and through hole application. 3P SL HSS-Co For high tensile strength steel <45HRC. THCHT Specific geometry and HSSCo allow stable and long life. Recommended Tapping Speeds Depending On Materials PO ISO Vc (m/min) ISO Vc (m/min) P5 ≤5 H K2 ≤5 I P6 ≤5 H K3 ≤5 I ST H 1st choice I suitable ANSI ROLL ANSI-ZELX MOLD NPT TYPE: US_055 TYPE: US_056 CARBIDE DCON K K DCON LK K LK LONG THL THL K LF LF HAND TAPS TCTR Ø Hole Ø Basic THCHT major LF THL LS DCON K LK NPT (tolerance) (mm) (mm) Code (chamfer) Ø (inch ) (inch) (inch) (inch) (inch) (inch) NOF Type Stock (mm) ANSI EG (STI) 1/8-27 ANSI G 8.35 8.39 Y89641 3P 10.117 2.125 0.75 - 0.44 0.328 0.375 4 055 f 1/4-18 ANSI G 10.8 10.85 Y89643 3P 13.426 2.437 1.062 - 0.56 0.421 0.437 4 055 f 3/8-18 ANSI G 14.25 14.27 Y89644 3P 16.866 2.562 1.062 - 0.7 0.531 0.5 4 055 f SPECIAL 1/2-14 ANSI G 17.5 17.6 Y89645 3P 20.980 3.125 1.375 - 0.69 0.515 0.625 4 056 f THREADS, GAUGES 3/4-14 ANSI G 22.9 22.91 Y89646 3P 26.325 3.25 1.375 - 0.91 0.679 0.687 5 056 f THREAD MILLS DIES CENTER DRILLS Technical info 352