Threading Technology – Clamping Technology 520

58 Machine Taps HSS Extra UNC UNF UNEF M MF NPSF Rp (BSPP) G NPT NPTF Rc (BSPT) STI SELF-LOCK Accessories NPSM/NPSC Tech. Info v c Product Finder UN-8 Ordering Example: CU803011.5018 DIN Length · ANSI Shank Overall length acc. to DIN 376 With internal chip collector ø d 2 ø d 1 l 2 l 1 Reduced Shank VA Stainless Steel Materials UN-8 P 60° Unified Thread ASME B1.1 Class of Fit 3BX 2) Coating NE2 Cutting Material HSS Extra Technical Characteristics C / 2-3 P / O 1) Thread Depth max. 1.5 x d 1 and Hole Shape Applications – Material P 1 .1- 4 .1 M 1 .1- 2 .1 K 1 .1- 4 .2 Reduced Shank Tool Identification CU803011 Dimens. ID Robust 2X-VA NE2 Flutes Nominal Size ø d 1 T.P.I. inch l 1 l 2 ø d 2 1 8 6.299 1.417 0.800 0.600 0.8750 .5018 5 1 1 / 8 8 7.087 1.575 0.896 0.672 1.0000 .5247 5 1 1 / 4 8 7.087 1.575 1.021 0.766 1.1250 .5249 6 1 3 / 8 8 7.874 1.654 1.108 0.831 1.2500 .5251 6 1 1 / 2 8 7.874 1.654 1.233 0.925 1.3750 .5253 6 1 5 / 8 8 7.874 1.772 1.305 0.979 1.5000 .5255 6 1 3 / 4 8 7.874 1.772 1.430 1.072 1.6250 .5257 6 1 7 / 8 8 8.858 1.969 1.519 1.139 1.7500 .5259 6 2 8 8.858 1.969 1.644 1.233 1.8750 .5261 6 2 1 / 4 8 9.843 1.969 1.894 1.420 2.1250 .5263 7 2 1 / 2 8 10.827 2.165 2.100 1.575 2.3750 .5265 7 3 8 11.810 2.165 2.100 1.575 2.8750 .5269 8 3 1 / 2 8 12.795 2.362 2.350 1.762 3.3750 .5273 10 4 8 13.780 2.362 2.350 1.762 3.8750 .5277 10 4 1 / 2 8 13.780 2.559 2.350 1.762 4.3750 .5281 10 1) If possible, use paste lubrication, coating both the tool and the walls of the drilled hole. Lubrication with oil is possible only in the vertical machining of blind holes, if the hole is entirely filled with oil. 2) Class 2B threads may be produced with 3BX taps. Larger sizes priced upon request. We have experience in making taps as large as 10 inches ø UN. The Complete Tool System Robust 2X-VA Taps when used with a KSN Type tapping attachment creates the optimal tapping unit!