Threading Technology – Clamping Technology 520

293 Thread Mills, Tapered GF-KEG = In stock = Allow 7 days for delivery UNC UNF UN M MF NPSF Rp (BSPP) G BGF W BSW, BSF NPT Rc (BSPT) STI SELF-LOCK Accessories Tech. Info v c / f z Product Finder ZBGF GSF (Aero) GSF-Z GF(I), GF-Z GF-Vario-Z GF-H ZGF(I) CIRC-GF Gigant FPC, FMC MoSys GF-KEG NPTF NPTF cutters are manufactured with a corrected profile Application recommendation: You must have an NC program for a spiral formed helix to prevent a profile step Metric Shank Carbide RH + LH 3-5Flutes DIN 6535 HB HE HA ø D For internal tapered threads ø d 2 9 Thr. l 3 ø d 1 l 2 l 1 NPTF P 60° 1:16 American Tapered Pipe Thread, ANSI/ASME B1.20.3 For threads without dryseal material , taper 1:16 Coating TICN Applications – Material P 1 .1- 5 .1 K 1 .1- 4 .2 N 1 .1-5, 2 .1-6 N 3 .1-2 N 4 .1-2, 5 .2 S 1 .1-3 P 1 .1- 5 .1 M 1 .1- 4 .1 K 1 .1- 4 .2 N 1 .1- 5 .2 S 1 .1- 2 .6 H 1 .1-2 Nominal Size ø D T.P.I. inch GF-KEG-VHM IKZ-HB GF-KEG-VHM IKZ-HB TICN l 1 l 2 l 3 ø d 1 ø d 2 inch mm Flutes 1 / 16 27 2.165 0.387 1.417 0.232 0.315 8 3 GF173101.5782 GF173106.5782 1 / 8 27 2.165 0.387 1.417 0.301 0.315 8 3 GF173101.5783 GF173106.5783 1 / 4 18 2.953 0.581 1.772 0.400 0.472 12 4 GF173111.5784 GF173116.5784 3 / 8 18 2.953 0.581 1.772 0.439 0.472 12 4 GF173111.5785 GF173116.5785 1 / 2 14 3.150 0.748 1.890 0.561 0.630 16 4 GF173131.5786 GF173136.5786 3 / 4 14 3.150 0.748 1.890 0.561 0.630 16 4 GF173131.5787 GF173136.5787 1 11 1 / 2 ⎫ ⎪ ⎬ ⎪ ⎭ 3.543 0.911 1.969 0.772 0.787 20 5 GF173151.9684 GF173156.9684 1 1 / 4 11 1 / 2 1 1 / 2 11 1 / 2 2 11 1 / 2 Thread Hole Preparatory Diameters for Tapered Pipe Thread NPTF, Taper 1:16 A) Cylindrical preparation of thread hole ø D 1 t 4 B) Tapered preparation of thread hole ø D 3 ø D 2 t 4 Taper 1:16 Nominal size ø D T.P.I. inch ø D 1 ø D 2 ø D 3 (+0.002) t 4 1 / 16 27 0.2402 0.2343 0.2524 0.3268 1 / 8 27 0.3327 0.3268 0.3449 0.3268 1 / 4 18 0.4291 0.4232 0.4488 0.4783 3 / 8 18 0.5630 0.5571 0.5843 0.4902 1 / 2 14 0.6929 0.6870 0.7217 0.6417 3 / 4 14 0.9055 0.8976 0.9323 0.6417 1 11 1 / 2 1.1319 1.1280 1.1701 0.7697 1 1 / 4 11 1 / 2 1.4764 1.4705 1.5150 0.7894 1 1 / 2 11 1 / 2 1.7224 1.7106 1.7539 0.7894 2 11 1 / 2 2.1949 2.1831 2.2280 0.8051