Brown & Sharpe Mfg. Co.
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TABLE OF TOOTH PARTS
CIRCULAR PITCH IN FIRST COLUMN
Circular Pitch | Threads or Teeth per inch. Linear. | Diametral Pitch | Thickness of Tooth on Pitch Line. | Addendum and Module | Working Depth of Tooth. | Depth of Space below Pitch Line. | Whole Depth of Tooth. | Width of Thread-Tool at End. | Width of Thread at Top. |
---|---|---|---|---|---|---|---|---|---|
P′ | 1″/P′ | P | t | s | D″ | s+f | D″+f | P′×.3005 | P′×.3354 |
2 | 1/2 | 1.5708 | 1.0000 | .6366 | 1.2782 | .7366 | 1.3732 | .6190 | .6707 |
1+7/8 | 8/15 | 1.6755 | .9375 | .5968 | 1.1937 | .6906 | 1.2874 | .5803 | .6288 |
1+3/4 | 2/3 | 1.7952 | .8750 | .5570 | 1.1141 | .6445 | 1.2016 | .5416 | .5869 |
1+5/8 | 8/13 | 1.9333 | .8125 | .5173 | 1.0345 | .5985 | 1.1158 | .5029 | .5450 |
1+1/2 | 2/3 | 2.0944 | .7500 | .4775 | .9549 | .5525 | 1.0299 | .4642 | .5030 |
1+7/16 | 16/23 | 2.1855 | .7187 | .4576 | .9151 | .5294 | .9870 | .4449 | .4821 |
1+3/8 | 8/11 | 2.2848 | .6875 | .4377 | .8754 | .5064 | .9441 | .4256 | .4611 |
1+1/3 | 3/4 | 2.3562 | .6666 | .4244 | .8488 | .4910 | .9154 | .4127 | .4471 |
1+5/16 | 16/21 | 2.3936 | .6562 | .4178 | .8356 | .4834 | .9012 | .4062 | .4402 |
1+1/4 | 4/5 | 2.5133 | .6250 | .3979 | .7958 | .4604 | .8583 | .3869 | .4192 |
1+3/16 | 16/19 | 2.6456 | .5937 | .3780 | .7560 | .4374 | .8154 | .3675 | .3982 |
1+1/8 | 8/9 | 2.7925 | .5625 | .3581 | .7162 | .4143 | .7724 | .3482 | .3773 |
1+1/16 | 16/17 | 2.9568 | .5312 | .3382 | .6764 | .3913 | .7295 | .3288 | .3563 |
1 | 1 | 3.1416 | .5000 | .3183 | .6366 | .3683 | .6866 | .3095 | .3354 |
15/16 | 1+1/15 | 3.3510 | .4687 | .2984 | .5968 | .3453 | .6437 | .2902 | .3144 |
7/8 | 1+1/7 | 3.5904 | .4375 | .2785 | .5570 | .3223 | .6007 | .2708 | .2934 |
13/16 | 1+3/15 | 3.8666 | .4062 | .2586 | .5173 | .2993 | .5579 | .2515 | .2725 |
4/5 | 1+1/4 | 3.9270 | .4000 | .2546 | .5092 | .2946 | .5492 | .2476 | .2683 |
3/4 | 1+1/3 | 4.1888 | .3750 | .2387 | .4775 | .2762 | .5150 | .2321 | .2515 |
11/16 | 1+5/11 | 4.5696 | .3437 | .2189 | .4377 | .2532 | .4720 | .2128 | .2306 |
2/3 | 1+1/2 | 4.7124 | .3333 | .2122 | .4244 | .2455 | .4577 | .2063 | .2236 |
5/8 | 1+3/5 | 5.0265 | .3125 | .1989 | .3979 | .2301 | .4291 | .1934 | .2096 |
3/5 | 1+2/3 | 5.2360 | .3000 | .1910 | .3820 | .2210 | .4120 | .1857 | .2012 |
4/7 | 1+3/4 | 5.4978 | .2857 | .1819 | .3638 | .2105 | .3923 | .1769 | .1916 |
9/16 | 1+7/9 | 5.5851 | .2812 | .1790 | .3581 | .2071 | .3862 | .1741 | .1886 |