Threading Technology – Clamping Technology 520

112 Machine Taps HSS Extra UNC UNF UNEF UN-8 M MF NPSF Rp (BSPP) G NPT Rc (BSPT) STI SELF-LOCK Accessories NPSM/NPSC Tech. Info v c Product Finder NPTF Ordering Example: CW181000.5782 Extra Length · ANSI Shank ø d 2 ø d 1 l 1 l 3 l 2 Reinforced Shank ( 1 / 16 - 3 / 8 ) ø d 2 ø d 1 l 2 l 1 Reduced Shank ( 1 / 2 - 2) STEEL Steel Materials VA Stainless Steel Materials NPTF P 60° 1:16 American Tapered Pipe Thread, ANSI/ASME B1.20.3 For threads without dryseal material , taper 1:16 Class of Fit Coating TIN TIN Cutting Material HSS Extra HSS Extra HSS Extra HSS Extra Technical Characteristics C / 2-3 C / 2-3 C / 2-3 C / 2-3 E / O E / O E / O E / O Applications – Material P 1 .1- 2 .1 K 1 .1-2 N 2 .2-3 P 1 .1- 2 .1 K 1 .1-2 N 2 .2-3 P 1 .1- 4 .1 M 1 .1- 3 .1 K 2 .1- 4 .2 N 2 .4-6 P 1 .1- 4 .1 M 1 .1- 3 .1 K 2 .1- 4 .2 N 2 .4-6 Tool Identification CW181000 CW181400 CW193000 CW193100 Dimens. ID Rekord 2A-STEEL Flutes Rekord 2A-STEEL TIN Flutes Rekord 2A-VA-AZ Flutes Rekord 2A-VA-AZ TIN Flutes Nominal Size ø d 1 T.P.I. inch l 1 l 2 l 3 ø d 2 1 / 16 27 3.543 0.69 1.161 0.3125 0.234 .5782 4 4 3 3 1 / 8 27 3.937 0.75 1.299 0.4375 0.328 .5783 5 5 3 3 1 / 4 18 3.937 1.06 1.772 0.5625 0.421 .5784 5 5 3 3 3 / 8 18 4.331 1.06 1.850 0.7000 0.531 .5785 5 5 3 3 1 / 2 14 5.512 1.38 — 0.6875 0.515 .5786 5 5 5 5 3 / 4 14 5.512 1.38 — 0.9063 0.679 .5787 6 6 5 5 1 11 1 / 2 6.299 1.75 — 1.1250 0.843 .5788 6 6 5 5 1 1 / 4 11 1 / 2 6.693 1.75 — 1.3125 0.984 .5789 6 6 5 5 1 1 / 2 11 1 / 2 7.480 1.75 — 1.5000 1.125 .5790 7 7 5 5 2 11 1 / 2 7.874 1.75 — 1.8750 1.406 .5791 7 7 7 7 Nominal Size ø d 1 T.P.I. inch ø D 1 ø D 2 ø D 3 (+0.002) t 1 1 / 16 27 0.2402 0.2343 0.2524 0.4646 1 / 8 27 0.3327 0.3268 0.3449 0.4685 1 / 4 18 0.4291 0.4232 0.4488 0.6850 3 / 8 18 0.5630 0.5571 0.5843 0.6969 1 / 2 14 0.6929 0.6870 0.7217 0.9094 3 / 4 14 0.9055 0.8976 0.9323 0.9291 1 11 1 / 2 1.1319 1.1280 1.1701 1.1181 1 1 / 4 11 1 / 2 1.4764 1.4705 1.5150 1.1378 1 1 / 2 11 1 / 2 1.7224 1.7106 1.7539 1.1378 2 11 1 / 2 2.1949 2.1831 2.2280 1.1535 Taper reamers for taper holes 1:16, see page 118 The minimum drilling depth t 1 includes the reach of screw by hand L 1 and the effective depth L 3 to ANSI B1.20.3 as well as the chamfer of the tap. Additional drilling-down has to be determined by the user according to the construction of the workpiece. For series production it is recommended that the minor thread dia. be made as per B. Special taps are required for blind holes where the minimum depths t 1 as listed in the above table cannot be met. In this case please supply a sketch with blind hole dimensions along with the order. Thread Hole Preparatory Diameters for Tapered Pipe Thread NPTF, Taper 1:16 A) Cylindrical preparation of thread hole B) Tapered preparation of thread hole ø D 1 t 1 ø D 3 ø D 2 t 1 Taper 1:16