Threading Technology – Clamping Technology 520

170 Roll Form Taps HSS Extra UNF M MF G STI SELF-LOCK Tech. Info v c Product Finder UNC Ordering Example: BU921000.5001 DIN Length · ANSI Shank Overall length acc. to DIN 2174 l 1 ø d 1 l 2 ø d 2 l 3 Reinforced Shank (No.1 - 3 / 8 ) ø d 2 ø d 1 l 2 l 1 Reduced Shank ( 7 / 16 - 1) STEEL Steel Materials UNC P 60° Unified Coarse Thread ASME B1.1 Class of Fit 2BX 2BX 2BX 2BX 2BX Coating NT TIN TIN TIN TICN Cutting Material HSS Extra HSS Extra HSS Extra HSS Extra HSS Extra Technical Characteristics C / 2-3 C / 2-3 C / 2-3 E / 1.5-2 E / 1.5-2 O / P E / O / P E / O E / O / P E / O / P Thread Depth max. 3 x d 1 max. 3 x d 1 max. 3 x d 1 and Hole Shape 1) Applications – Material P 1 .1- 3 .1 P 1 .1- 3 .1 M 1 .1- 2 .1 2) N 1 .4-5, 2 .1-2 P 1 .1- 3 .1 M 1 .1- 2 .1 2) N 1 .4-5, 2 .1-2 P 1 .1- 3 .1 M 1 .1- 2 .1 2) N 1 .4-5, 2 .1-2 P 1 .1- 3 .1 M 1 .1- 2 .1 2) N 1 .4-5, 2 .1-2 Reinforced Shank Tool Identification BU921000 BU921400 BW921400 BU931400 BU939000 Dimens. ID Druck 1-STEEL-SN NT Druck 1-STEEL-SN TIN Druck 1-STEEL-SN IKZ-TIN Druck 1-STEEL/E-SN TIN Druck 1-STEEL/E-SN TICN Nominal Size ø d 1 T.P.I. inch l 1 l 2 l 3 ø d 2 No. 1 64 1.772 0.276 0.472 0.141 0.110 0.0669 .5000 No. 2 56 1.772 0.276 0.472 0.141 0.110 0.0787 .5001 No. 3 48 1.969 0.354 0.551 0.141 0.110 0.0906 .5002 No. 4 40 2.205 0.433 0.709 0.141 0.110 0.1004 .5003 No. 5 40 2.205 0.433 0.709 0.141 0.110 0.1142 .5004 No. 6 32 2.205 0.472 0.787 0.141 0.110 0.1240 .5005 No. 8 32 2.480 0.512 0.827 0.168 0.131 0.1496 .5006 No. 10 24 2.756 0.591 0.984 0.194 0.152 0.1713 .5007 No. 12 24 3.150 0.630 1.142 0.220 0.165 0.1969 .5008 1 / 4 20 3.150 0.669 1.181 0.255 0.191 0.2264 .5009 5 / 16 18 3.543 0.787 1.378 0.318 0.238 0.2874 .5010 3 / 8 16 3.937 0.866 1.535 0.381 0.286 0.3465 .5011 Reduced Shank Tool Identification CU921000 CU921400 CW921400 Dimens. ID Druck 2-STEEL-SN NT Druck 2-STEEL-SN TIN Druck 2-STEEL-SN IKZ-TIN Nominal Size ø d 1 T.P.I. inch l 1 l 2 l 3 ø d 2 7 / 16 14 3.937 0.866 — 0.323 0.242 0.4035 .5012 1 / 2 13 4.331 0.984 — 0.367 0.275 0.4646 .5013 9 / 16 12 4.331 1.024 — 0.429 0.322 0.5236 .5014 5 / 8 11 4.331 1.063 — 0.480 0.360 0.5827 .5015 3 / 4 10 4.921 1.181 — 0.590 0.442 0.7028 .5016 7 / 8 9 5.512 1.260 — 0.697 0.523 0.8228 .5017 1 8 6.299 1.417 — 0.800 0.600 0.9409 .5018 1) Cold-forming in through holes is possible only with external cooling/lubrication 2) Restricted application possibilities with emulsion We recommend a smaller preparatory diameter by 0.002 in for difficult to form materials (such as aluminum cast alloys) for P = 24 T.P.I. and coarser threads. For further information regarding the recommended preparatory diameters, see page 208 - 209.