LineUp arranged by type of thread Intro ST - Straight fluted taps 32UN SP GENERAL PURPOSE DIN HT JIS 316 ST - Straight fluted taps SL ANSI 8UN 1 1/8 ÷ 3 Straight Fluted Taps YMW GENERAL PURPOSE DIN 12UN HT JIS 317 POANSI 32UN 1/2 Straight Fluted Taps YMW ST SP - Spiral fluted taps UNEF Z-PRO DIN 94 ROLL HVSP JIS SP - Spiral fluted taps ANSI 12UN 1 3/4 Spiral Fluted Taps for large forged parts in theheavy metalworking industryYMW GENERAL PURPOSE DIN GENERAL PURPOSE CARBIDEDIN SP JIS 163 SP JIS 163 ANSI ANSI 12UN 1 3/4 ÷ 2 Spiral Fluted Taps YMW UNEF 1/4 ÷ 1 Spiral Fluted Taps YMW LONG ST - Straight fluted taps PO - Spiral pointed taps HAND TAPS GENERAL PURPOSE DIN GENERAL PURPOSE DIN HT JIS 317 PO JIS 244 ANSI12UN 1 1/16 ÷ 2Straight Fluted TapsYMWUNEF 1/4 ÷ 3/4 ANSISpiral Pointed TapsYMWEG (STI) 20UN ST - Straight fluted taps SPECIALTHREADS, GAUGES GENERAL PURPOSE DIN ST - Straight fluted taps HT JIS 317 THREADANSIMILLS UNEF No.12 ÷ 1 Straight Fluted Taps YMW GENERAL PURPOSE DIN HT JIS 317 DIES ANSI 20UN 9/16 ÷ 5/8 Straight Fluted Taps YMW CENTER DRILLS Technical info 61