Threading Technology – Clamping Technology 520

176 Roll Form Taps HSS Extra UNC M MF G STI SELF-LOCK Tech. Info v c Product Finder UNF Ordering Example: BU921000.5033 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.0 - 3 / 8 ) ø d 2 ø d 1 l 2 l 1 Reduced Shank ( 7 / 16 - 7 / 8 ) STEEL Steel Materials UNF P 60° Unified Fine 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. 0 80 1.626 0.236 0.433 0.141 0.110 0.0551 .5033 No. 1 72 1.772 0.276 0.472 0.141 0.110 0.0669 .5034 No. 2 64 1.772 0.276 0.472 0.141 0.110 0.0795 .5035 No. 3 56 1.969 0.354 0.551 0.141 0.110 0.0913 .5036 No. 4 48 2.205 0.433 0.709 0.141 0.110 0.1031 .5037 No. 5 44 2.205 0.433 0.709 0.141 0.110 0.1150 .5038 No. 6 40 2.205 0.472 0.787 0.141 0.110 0.1268 .5039 No. 8 36 2.480 0.512 0.827 0.168 0.131 0.1516 .5040 No. 10 32 2.756 0.512 0.984 0.194 0.152 0.1752 .5041 No. 12 28 3.150 0.630 1.142 0.220 0.165 0.2008 .5042 1 / 4 28 3.150 0.669 1.181 0.255 0.191 0.2343 .5043 5 / 16 24 3.543 0.669 1.260 0.318 0.238 0.2933 .5044 3 / 8 24 3.937 0.709 1.535 0.381 0.286 0.3563 .5045 Reduced Shank Tool Identification CU921000 CU921400 Dimens. ID Druck 2-STEEL-SN NT Druck 2-STEEL-SN TIN Nominal Size ø d 1 T.P.I. inch l 1 l 2 l 3 ø d 2 7 / 16 20 3.937 0.866 — 0.323 0.242 0.4154 .5046 1 / 2 20 3.937 0.866 — 0.367 0.275 0.4783 .5047 9 / 16 18 3.937 0.866 — 0.429 0.322 0.5374 .5048 5 / 8 18 3.937 0.866 — 0.480 0.360 0.6004 .5049 3 / 4 16 4.331 0.984 — 0.590 0.442 0.7224 .5050 7 / 8 14 4.921 1.024 — 0.697 0.523 0.8425 .5051 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.