Table 2. Spindle Revolutions and Cam Rise for Threading Number of Threads per Inch
Length of Threaded Portion, Inch
80
72
64
56
48
40
36
32
30
28
24
20
18
16
14
First Line: Revolutions of Spindle for Threading. Second Line: Rise on Cam for Threading, Inch
9.50
9.00
8.50
8.00
6.00
5.50
5.50
5.00
5.00
5.00
3.00
… … … … … … … …
1 ∕ 16
0.107
0.113
0.120
0.129
0.110
0.121
0.134
0.138
0.147
0.157
0.106
14.50
13.50
12.50
11.50
9.00
8.00
7.00
7.00
7.00
6.50
4.50
4.00
3.50
3.50
… …
1 ∕ 8
0.163
0.169
0.176
0.185
0.165
0.176
0.171
0.193
0.205
0.204
0.159
0.170
0.165
0.186
19.50
18.00
16.50
15.00
12.00
10.50
10.00
9.00
8.50
8.50
6.00
5.50
5.00
4.50
4.00
3 ∕ 16
0.219
0.225
0.232
0.241
0.220
0.231
0.244
0.248
0.249
0.267
0.213
0.234
0.236
0.239
0.243
24.50
23.508
20.50
18.50
15.00
13.00
12.00
11.00
10.50
10.00
7.50
6.50
6.00
5.50
5.00
1 ∕ 4
0.276
0.294
0.288
0.297
0.275
0.286
0.293
0.303
0.308
0.314
0.266
0.276
0.283
0.292
0.304
29.50
27.00
24.50
22.00
18.00
15.50
14.50
13.00
12.50
12.00
9.00
8.00
7.00
6.50
6.00
5 ∕ 16
0.332
0.338
0.345
0.354
0.340
0.341
0.354
0.358
0.367
0.377
0.319
0.340
0.330
0.345
0.364
34.50
31.50
28.50
25.50
21.00
18.00
16.50
15.00
14.50
13.50
10.50
9.00
8.50
7.50
7.00
3 ∕ 8
0.388
0.394
0.401
0.410
0.385
0.396
0.403
0.413
0.425
0.424
0.372
0.383
0.401
0.398
0.425
39.50
36.00
32.50
29.00
24.00
20.50
19.00
17.00
16.00
15.50
12.00
10.50
9.50
8.50
7.50
7 ∕ 16
0.444
0.450
0.457
0.466
0.440
0.451
0.464
0.468
0.469
0.487
0.425
0.446
0.448
0.451
0.455
44.50
40.50
36.50
32.50
27.00
23.00
21.00
19.00
18.00
17.00
13.50
11.50
10.50
9.50
8.50
1 ∕ 2
0.501
0.506
0.513
0.522
0.495
0.506
0.513
0.523
0.528
0.534
0.478
0.489
0.496
0.504
0.516
49.50
45.00
40.50
36.00
30.00
25.50
23.50
21.00
20.00
19.00
15.00
13.00
11.50
10.50
9.50
9 ∕ 16
0.559
0.563
0.570
0.579
0.550
0.561
0.574
0.578
0.587
0.597
0.531
0.553
0.543
0.558
0.577
54.50
49.50
44.50
39.50
33.00
28.00
25.50
23.00
22.00
20.50
16.50
14.00
13.00
11.50
10.50
5 ∕ 8
0.613
0.619
0.626
0.635
0.605
0.616
0.623
0.633
0.645
0.644
0.584
0.595
0.614
0.611
0.637
59.50
54.00
48.50
43.00
36.00
30.50
28.00
25.00
23.50
22.50
18.00
15.50
14.00
12.50
11.00
11 ∕ 16
0.679
0.675
0.682
0.691
0.660
0.671
0.684
0.688
0.689
0.707
0.638
0.659
0.661
0.664
0.668
64.50
58.50
52.50
46.50
39.00
33.00
30.00
27.00
25.50
24.00
19.50
16.50
15.00
13.50
12.00
3 ∕ 4
0.726
0.731
0.738
0.747
0.715
0.726
0.733
0.743
0.748
0.754
0.691
0.701
0.708
0.717
0.728
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