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|
Screw Thread d |
1/4 |
5/16 |
3/8 |
7/16 |
1/2 |
9/16 |
5/8 |
|
|
d |
0.2500 |
0.3125 |
0.3750 |
0.4375 |
0.5000 |
0.5625 |
0.6250 |
|
|
PP |
UNC |
20 |
18 |
16 |
14 |
13 |
12 |
11 |
|
s |
max |
0.438 |
0.500 |
0.562 |
0.688 |
0.750 |
0.875 |
0.938 |
|
min |
0.428 |
0.489 |
0.551 |
0.675 |
0.736 |
0.761 |
0.922 |
|
|
dc |
max |
0.728 |
0.820 |
0.915 |
1.131 |
1.205 |
1.300 |
1.360 |
|
min |
0.700 |
0.790 |
0.885 |
1.100 |
1.175 |
1.260 |
1.280 |
|
|
h |
min |
0.04 |
0.04 |
0.04 |
0.04 |
0.06 |
0.06 |
0.06 |
|
k |
max |
0.312 |
0.375 |
0.406 |
0.468 |
0.515 |
0.578 |
0.640 |
|
min |
0.281 |
0.343 |
0.390 |
0.437 |
0.485 |
0.546 |
0.600 |
|