Общий каталог OSG 2018 - 2019 - страница 660

Thread Limits Machine Screw Taps - Ground Thread Unified and American National Form (Table 329) ThreadsTapPer InchMajor Diameter BasicSizeInNCUNCUFUNFNSBasicPitchMin.Max.Diam.H1 LimitMin.Max.Pitch Diameter LimitsH2 LimitH3 LimitMin.Max.Min.Max.H7 Limit*Min.Max.LEAD TOLERANCEA maximum lead deviation of plus or minus 0.0005”within any two threads not fartherapart than one inch is permitted.ANGLE TOLERANCE6 to 9 threads per inch incl. = ±25’ in 1/2 angle. 0 - 80 - 0.0600 0.0605 0.0616 0.0519 0.0519 0.0524 0.0524 0.0529 – – – – 10 to 80 threads per inch incl., = ±30’ in 1/2 angle. 1 64 - - 0.0730 0.0736 0.0750 0.0629 0.0629 0.0634 0.0634 0.0639 – – – – FORMULA 1 - 72 - 0.0730 0.0736 0.0748 0.0640 0.0640 0.0645 0.0645 0.0650 – – – – Maximum major diameter = Basic +A. 2 56 - - 0.0860 0.0867 0.0883 0.0744 0.0744 0.0749 0.0749 0.0754 – – – – Minimum major diameter = Basic +B. 2 - 64 - 0.0860 0.0866 0.0880 0.0759 0.0759 0.0764 0.0764 0.0769 – – – – For values of A and B see table 331. 3 48 - - 0.0990 0.0999 0.1017 0.0855 0.0855 0.0860 0.0860 0.0865 – – – – PITCH DIAMETER LIMITS FOR TAPS THROUGH 1” 3 - 56 - 0.0990 0.0997 0.1013 0.0874 0.0874 0.0879 0.0879 0.0884 – – – – DIAMETER 4 - - 36 0.1120 0.1135 0.1156 0.0940 – – 0.0945 0.0950 – – – – H1 Limit = Basic PD to basic PD + 0.0005”. 4 40 - - 0.1120 0.1133 0.1152 0.0958 0.0958 0.0963 0.0963 0.0968 – – – – H2 Limit = Basic PD + 0.0005” to Basic PD + 0.0010”. 4 - 48 - 0.1120 0.1129 0.1147 0.0985 0.0985 0.0990 0.0990 0.0995 – – – – H3 Limit = Basic PD + 0.0010” to Basic PD + 0.0015”. 5 40 - - 0.1250 0.1263 0.1282 0.1088 0.1088 0.1093 0.1093 0.1098 – – – – H4 Limit = Basic PD + 0.0015” to Basic PD + 0.0020”. 56688 - 4432--4032--36-----0.12500.12630.12800.1102 – – 0.1107 0.1112 – – – –0.13800.14010.14210.11770.11770.11820.11820.11870.11870.11920.12070.12120.13800.13930.14120.12180.12180.12230.12230.1228––––0.16400.16610.16810.14370.14370.14420.14420.14470.14470.14520.14670.14720.16400.16550.16760.14600.14600.14650.14650.1470––––H5 Limit = Basic PD + 0.0020” to Basic PD + 0.0025”.H6 Limit = Basic PD + 0.0025” to Basic PD + 0.0030”.PITCH DIAMETER LIMITS FOR TAPS OVER1” DIAMETER THROUGH 1-1/2” DIAMETERH4 Limit = Basic PD + 0.0010” to Basic PD + 0.0020”. 10 24 - - 0.1900 0.1927 0.1954 0.1629 0.1629 0.1634 0.1634 0.1639 0.1639 0.1644 0.1659 0.1664 10 - 32 - 0.1900 0.1921 0.1941 0.1697 0.1697 0.1702 0.1702 0.1707 0.1707 0.1712 0.1727 0.1732 12 24 - - 0.2160 0.2187 0.2214 0.1889 0.1889 0.1894 – – 0.1899 0.1904 – – 12 - 28 - 0.2160 0.2183 0.2206 0.1928 0.1928 0.1933 – – 0.1938 0.1943 – – *Major diameter for H7 Limit Taps is 0.002” larger than values shown in min. and max. columns. Fractional Size Taps - Ground Thread Unified and American National Form (Table 327) ThreadsTapPer InchMajor Diameter Basic Pitch Diameter Limits SizeInchesNCUNCUFUNFNS Basic Min. Max. PitchDiam.H1 LimitMin.Max. H2 LimitMin.Max. H3 LimitMin.Max. H4 LimitMin.Max.H5 LimitMin.Max. H6 LimitMin.Max. 1/4 20 — — 0.2500 0.2533 0.2565 0.2175 0.2175 0.2180 0.2180 0.2185 0.2185 0.2190 – – 0.2195 0.2200 – – 1/4 — 28 — 0.2500 0.2523 0.2546 0.2268 0.2268 0.2273 0.2273 0.2278 0.2278 0.2283 0.2283 0.2288 – – – – 5/16 18 — — 0.3125 0.3161 0.3197 0.2764 0.2764 0.2769 0.2769 0.2774 0.2774 0.2779 0.2784 0.2789 – – 5/16 — 24 — 0.3125 0.3152 0.3179 0.2854 0.2854 0.2859 0.2859 0.2864 0.2864 0.2869 0.2869 0.2874 – – – – 3/8 16 — — 0.3750 0.3790 0.3831 0.3344 0.3344 0.3349 0.3349 0.3354 0.3354 0.3359 – – 0.3364 0.3369 – – 3/8 — 24 — 0.3750 0.3777 0.3804 0.3479 0.3479 0.3484 0.3484 0.3489 0.3489 0.3494 0.3494 0.3499 – – – – 7/16 14 — — 0.4375 0.4422 0.4468 0.3911 0.3911 0.3916 0.3916 0.3921 0.3921 0.3926 – – 0.3931 0.3936 – – 7/16 — 20 — 0.4375 0.4408 0.4440 0.4050 0.4050 0.4055 0.4055 0.4060 0.4060 0.4065 – – 0.4070 0.4075 – – 1/2 13 — — 0.5000 0.5050 0.5100 0.4500 0.4500 0.4505 0.4505 0.4510 0.4510 0.4515 – – 0.4520 0.4525 – – 1/2 — 20 — 0.5000 0.5033 0.5065 0.4675 0.4675 0.4680 0.4680 0.4685 0.4685 0.4690 – – 0.4695 0.4700 – – 9/16 12 — — 0.5625 0.5679 0.5733 0.5084 0.5084 0.5089 0.5089 0.5094 0.5094 0.5099 – – 0.5104 0.5109 – – 9/16 — 18 — 0.5625 0.5661 0.5697 0.5264 0.5264 0.5269 0.5269 0.5274 0.5274 0.5279 – – 0.5284 0.5289 – – 5/8 11 — — 0.6250 0.6309 0.6368 0.5660 0.5660 0.5665 0.5665 0.5670 0.5670 0.5675 – – 0.5680 0.5685 – – 5/8 — 18 — 0.6250 0.6286 0.6322 0.5889 0.5889 0.5894 0.5894 0.5899 0.5899 0.5904 – – 0.5909 0.5914 – – 11/16 — — 11 0.6875 0.6934 0.6993 0.6285 – – – – 0.6295 0.6300 – – – – – – 11/16 — — 16 0.6875 0.6915 0.6956 0.6469 – – – – 0.6479 0.6484 – – – – – – 3/4 10 — — 0.7500 0.7565 0.7630 0.6850 0.6850 0.6855 0.6855 0.6860 0.6860 0.6865 – 0.8048 0.6870 0.6875 – – 3/4 — 16 — 0.7500 0.7540 0.7581 0.7094 0.7094 0.7099 0.7099 0.7104 0.7104 0.7109 – 0.8306 0.7114 0.7119 – – 7/8 9 — — 0.8750 0.8822 0.8894 0.8028 0.8028 0.8033 0.8033 0.8038 – – 0.8043 0.9208 – – 0.8053 0.8058 7/8 — 14 — 0.8750 0.8797 0.8843 0.8286 0.8286 0.8291 0.8291 0.8296 – – 0.8301 0.9479 – – 0.8311 0.8316 1 8 — — 1.0000 1.0081 1.0162 0.9188 0.9188 0.9193 0.9193 0.9198 – – 0.9203 0.9556 – – 0.9213 0.9218 1 — 12 — 1.0000 1.0054 1.0108 0.9459 – – – – – – 0.9474 1.0342 – – – – 1 — — 14 1.0000 1.0047 1.0093 0.9536 – – .9541 .9546 – – 0.9551 1.0729 – – 0.9561 0.9566 1 1/8 7 — — 1.1250 1.1343 1.1436 1.0322 – – – – – – 1.0332 1.1592 – – – – 1 1/8 — 12 — 1.1250 1.1304 1.1358 1.0709 – – – – – – 1.0719 1.1979 – – – – 1 1/4 7 — — 1.2500 1.2593 1.2686 1.1572 – – – – – – 1.1582 1.2687 – – – – 1 1/4 — 12 — 1.2500 1.2554 1.2608 1.1959 – – – – – – 1.1969 1.3229 – – – – 1 3/8 6 — — 1.3750 1.3859 1.3967 1.2667 – – – – – – 1.2677 1.3937 – – – – 1 3/8 — 12 — 1.3750 1.3804 1.3858 1.3209 – – – – – – 1.3219 1.4479 – – – – 1 1/2 6 — — 1.5000 1.5109 1.5217 1.3917 – – – – – – 1.3927 – – – – – 1 1/2 — 12 — 1.5000 1.5054 1.5108 1.4459 – – – – – – 1.4469 – – – – – 660 Threading Technical WWW.OSGTOOL.COM