204 Каталог KYOCERA 2016 Твердосплавный вращающийся режущий инструмент ENG Стр.202

Catalog KYOCERA 2016 Solid carbide cutting tools Стр. 202 0204 ENG Lab2u

INDEX TECHNICAL SAWS REAMERS BORING BARS ENGRAVERS THREAD nMJL1-S ROUTERS END MILLS DRILLS & TAPS TAPS ENGINEERING DATA TAP DIMENSIONS SPECIAL EXTENSION TAPS Ground Thread (Ref. USCTI Table 303-A) -(L) 1 (d- + ,031)-J Unless otherwise specified, special extension taps will be furnished with dimensions and tolerances as shown for Machine Screw and Fractional taps in Tables 302 and 303, and for Pipe taps in Table 311. Exceptions: 1. Types of centers are optional with manufacturer. 2. Tolerances on shank diameter d1 for I4 lengh as shown in the following table. 3. Shank eccentricity tolerance in Table 317 applies only to the I4 length shown in the following table. 4. Length of Close Tolerance Shank, (L4) is minimum. Nominal Tap Size Machine Fractional Screw Thread Length l Shank Dia. d1 Square Length 12 Size of Square Ground Shank Length 4 - 6 0.688 0.141 0.188 0.110 1.13 - 8 0.750 0.168 0.250 0.131 1.25 - 10 - 1 2 0.875 0.194 0.250 0.152 1.38 1/4 14 1.000 0.255 0.313 0.191 1.50 1/4 - 1.000 0.185 0.250 0.138 Full Length 5/16 - 1.130 0.318 0.375 0.238 1.56 5/16 - 1.130 0.240 0.281 0.180 Full Length 3/8 - 1.250 0.381 0.438 0.286 1.63 3/8 - 1.250 0.275 0.375 0.206 Full Length 7/16 - 1.440 0.323 0.406 0.242 1.69 1/2 - 1.660 0.367 0.438 0.275 1.69 9/16 - 1.660 0.429 0.500 0.322 1.88 5/8 - 1.810 0.480 0.563 0.360 2.00 3/4 - 2.000 0.590 0.688 0.442 2.25 7/8 - 2.220 0.697 0.750 0.523 2.50 1 - 2.500 0.800 0.813 0.600 2.63 1-1/8 - 2.560 0.896 0.875 0.672 2.75 1-1/4 - 2.560 1.021 1.000 0.766 2.88 1-3/8 - 3.000 1.108 1.063 0.831 3.00 1-1/2 - 3.000 1.233 1.125 0.925 3.00 Small Shank Tolerances for Shank Diameter, d1 and l4 length Size Range Direction Tolerance Fractional Machine Screw (in) 1/4 to 5/8 incl. 0 - 14 incl. Minus 0.003 11/16 to 1-1/2 incl. Minus 0.004 202 Kyocera