| Nominal Screw Size |
0000 thru 00 |
0 thru 12 |
1/4 thru 3/4 |
| Nominal Screw Length |
Tolerance on Length |
| Up to 1/2 in., incl. |
-0.01 |
-0.02 |
-0.03 |
| Over 1/2 to 1 in., incl. |
-0.02 |
-0.03 |
-0.03 |
| Over 1 to 2 in., incl. |
- |
-0.06 |
-0.06 |
| Over 2 in. |
- |
-0.09 |
-0.09 |
May also be available in Nylon, PVC, Polypropylene, Phenolic, PTFE, G10, Kel-F®, Delrin/Acetal, Neoprene, Mylar, Glass-Filled Nylon, Peek, CPVC, ABS, PVDF / Kynar, Isoplast, Polycarbonate, Polyethylene, or Ultem®
Hex Head Machine Screws Variations
| Description |
A |
H |
Length |
Thread Size |
W |
Quote |
| 256 X 0.094 |
3.048 mm - 3.175mm |
1.016 mm - 1.270mm |
2.388 mm |
256 |
3.404 mm |
 |
| 256 X 0.125 |
3.048 mm - 3.175mm |
1.016 mm - 1.270mm |
3.175 mm |
256 |
3.404 mm |
|
| 256 X 0.156 |
3.048 mm - 3.175mm |
1.016 mm - 1.270mm |
3.962 mm |
256 |
3.404 mm |
|
| 256 X 0.187 |
3.048 mm - 3.175mm |
1.016 mm - 1.270mm |
4.750 mm |
256 |
3.404 mm |
|
| 256 X 0.25 |
3.048 mm - 3.175mm |
1.016 mm - 1.270mm |
6.350 mm |
256 |
3.404 mm |
|
| 256 X 0.281 |
3.048 mm - 3.175mm |
1.016 mm - 1.270mm |
7.137 mm |
256 |
3.404 mm |
|
| 256 X 0.312 |
3.048 mm - 3.175mm |
1.016 mm - 1.270mm |
7.925 mm |
256 |
3.404 mm |
|
| 256 X 0.375 |
3.048 mm - 3.175mm |
1.016 mm - 1.270mm |
9.525 mm |
256 |
3.404 mm |
|
| 256 X 0.391 |
3.048 mm - 3.175mm |
1.016 mm - 1.270mm |
9.931 mm |
256 |
3.404 mm |
|
| 256 X 0.437 |
3.048 mm - 3.175mm |
1.016 mm - 1.270mm |
11.100 mm |
256 |
3.404 mm |
|
| 256 X 0.5 |
3.048 mm - 3.175mm |
1.016 mm - 1.270mm |
12.700 mm |
256 |
3.404 mm |
|
| 256 X 0.562 |
3.048 mm - 3.175mm |
1.016 mm - 1.270mm |
14.275 mm |
256 |
3.404 mm |
|
| 256 X 0.625 |
3.048 mm - 3.175mm |
1.016 mm - 1.270mm |
15.875 mm |
256 |
3.404 mm |
|
| 256 X 0.75 |
3.048 mm - 3.175mm |
1.016 mm - 1.270mm |
19.050 mm |
256 |
3.404 mm |
|
| 256 X 0.875 |
3.048 mm - 3.175mm |
1.016 mm - 1.270mm |
22.225 mm |
256 |
3.404 mm |
|
| 256 X 1 |
3.048 mm - 3.175mm |
1.016 mm - 1.270mm |
25.400 mm |
256 |
3.404 mm |
|
| 256 X 1.125 |
3.048 mm - 3.175mm |
1.016 mm - 1.270mm |
28.575 mm |
256 |
3.404 mm |
|
| 264 X 0.187 |
3.048 mm - 3.175mm |
1.016 mm - 1.270mm |
4.750 mm |
264 |
3.404 mm |
|
| 264 X 0.375 |
3.048 mm - 3.175mm |
1.016 mm - 1.270mm |
9.525 mm |
264 |
3.404 mm |
|
| 348 X 0.125 |
4.597 mm - 4.775mm |
1.118 mm - 1.397mm |
3.175 mm |
348 |
5.131 mm |
|
| 348 X 0.187 |
4.597 mm - 4.775mm |
1.118 mm - 1.397mm |
4.750 mm |
348 |
5.131 mm |
|
| 348 X 0.25 |
4.597 mm - 4.775mm |
1.118 mm - 1.397mm |
6.350 mm |
348 |
5.131 mm |
|
| 348 X 0.312 |
4.597 mm - 4.775mm |
1.118 mm - 1.397mm |
7.925 mm |
348 |
5.131 mm |
|
| 348 X 0.375 |
4.597 mm - 4.775mm |
1.118 mm - 1.397mm |
9.525 mm |
348 |
5.131 mm |
|
| 348 X 0.437 |
4.597 mm - 4.775mm |
1.118 mm - 1.397mm |
11.100 mm |
348 |
5.131 mm |
|
| 348 X 0.5 |
4.597 mm - 4.775mm |
1.118 mm - 1.397mm |
12.700 mm |
348 |
5.131 mm |
|
| 348 X 0.75 |
4.597 mm - 4.775mm |
1.118 mm - 1.397mm |
19.050 mm |
348 |
5.131 mm |
|
| 356 X 0.312 |
4.597 mm - 4.775mm |
1.118 mm - 1.397mm |
7.925 mm |
356 |
5.131 mm |
|
| 436 X 0.5 |
4.597 mm - 4.775mm |
1.245 mm - 1.524mm |
12.700 mm |
436 |
5.131 mm |
|
| 440 X 0.094 |
4.597 mm - 4.775mm |
1.245 mm - 1.524mm |
2.388 mm |
440 |
5.131 mm |
|
| 440 X 0.125 |
4.597 mm - 4.775mm |
1.245 mm - 1.524mm |
3.175 mm |
440 |
5.131 mm |
|
| 440 X 0.141 |
4.597 mm - 4.775mm |
1.245 mm - 1.524mm |
3.581 mm |
440 |
5.131 mm |
|
| 440 X 0.187 |
4.597 mm - 4.775mm |
1.245 mm - 1.524mm |
4.750 mm |
440 |
5.131 mm |
|
| 440 X 0.25 |
4.597 mm - 4.775mm |
1.245 mm - 1.524mm |
6.350 mm |
440 |
5.131 mm |
|
| 440 X 0.281 |
4.597 mm - 4.775mm |
1.219 mm - 1.524mm |
7.137 mm |
440 |
5.131 mm |
|
| 440 X 0.312 |
4.597 mm - 4.775mm |
1.245 mm - 1.524mm |
7.925 mm |
440 |
5.131 mm |
|
| 440 X 0.375 |
4.597 mm - 4.775mm |
1.245 mm - 1.524mm |
9.525 mm |
440 |
5.131 mm |
|
| 440 X 0.437 |
4.597 mm - 4.775mm |
1.245 mm - 1.524mm |
11.100 mm |
440 |
5.131 mm |
|
| 440 X 0.5 |
4.597 mm - 4.775mm |
1.245 mm - 1.524mm |
12.700 mm |
440 |
5.131 mm |
|
| 440 X 0.562 |
4.597 mm - 4.775mm |
1.245 mm - 1.524mm |
14.275 mm |
440 |
5.131 mm |
|
| 440 X 0.625 |
4.597 mm - 4.775mm |
1.245 mm - 1.524mm |
15.875 mm |
440 |
5.131 mm |
|
| 440 X 0.687 |
4.597 mm - 4.775mm |
1.245 mm - 1.524mm |
17.450 mm |
440 |
5.131 mm |
|
| 440 X 0.75 |
4.597 mm - 4.775mm |
1.245 mm - 1.524mm |
19.050 mm |
440 |
5.131 mm |
|
| 440 X 0.875 |
4.597 mm - 4.775mm |
1.245 mm - 1.524mm |
22.225 mm |
440 |
5.131 mm |
|
| 440 X 1 |
4.597 mm - 4.775mm |
1.245 mm - 1.524mm |
25.400 mm |
440 |
5.131 mm |
|
| 440 X 1.125 |
4.597 mm - 4.775mm |
1.245 mm - 1.524mm |
28.575 mm |
440 |
5.131 mm |
|
| 440 X 1.187 |
4.597 mm - 4.775mm |
1.245 mm - 1.524mm |
30.150 mm |
440 |
5.131 mm |
|
| 440 X 1.25 |
4.597 mm - 4.775mm |
1.245 mm - 1.524mm |
31.750 mm |
440 |
5.131 mm |
|
| 440 X 1.37 |
4.597 mm - 4.775mm |
1.245 mm - 1.524mm |
34.925 mm |
440 |
5.131 mm |
|
| 440 X 1.5 |
4.597 mm - 4.775mm |
1.245 mm - 1.524mm |
38.100 mm |
440 |
5.131 mm |
|
| 440 X 1.625 |
4.597 mm - 4.775mm |
1.245 mm - 1.524mm |
41.275 mm |
440 |
5.131 mm |
|
| 440 X 1.75 |
4.597 mm - 4.775mm |
1.245 mm - 1.524mm |
44.450 mm |
440 |
5.131 mm |
|
| 448 X 0.25 |
4.597 mm - 4.775mm |
1.245 mm - 1.524mm |
6.350 mm |
448 |
5.131 mm |
|
| 632 X 0.094 |
6.198 mm - 6.350mm |
2.032 mm - 2.362mm |
2.388 mm |
632 |
6.909 mm |
|
| 632 X 0.125 |
6.198 mm - 6.350mm |
2.032 mm - 2.362mm |
3.175 mm |
632 |
6.909 mm |
|
| 632 X 0.156 |
6.198 mm - 6.350mm |
2.032 mm - 2.362mm |
3.962 mm |
632 |
6.909 mm |
|
| 632 X 0.187 |
6.198 mm - 6.350mm |
2.032 mm - 2.362mm |
4.750 mm |
632 |
6.909 mm |
|
| 632 X 0.25 |
6.198 mm - 6.350mm |
2.032 mm - 2.362mm |
6.350 mm |
632 |
6.909 mm |
|
| 632 X 0.312 |
6.198 mm - 6.350mm |
2.032 mm - 2.362mm |
7.925 mm |
632 |
6.909 mm |
|
| 632 X 0.375 |
6.198 mm - 6.350mm |
2.032 mm - 2.362mm |
9.525 mm |
632 |
6.909 mm |
|
| 632 X 0.437 |
6.198 mm - 6.350mm |
2.032 mm - 2.362mm |
11.100 mm |
632 |
6.909 mm |
|
| 632 X 0.5 |
6.198 mm - 6.350mm |
2.032 mm - 2.362mm |
12.700 mm |
632 |
6.909 mm |
|
| 632 X 0.562 |
6.198 mm - 6.350mm |
2.032 mm - 2.362mm |
14.275 mm |
632 |
6.909 mm |
|
| 632 X 0.625 |
6.198 mm - 6.350mm |
2.032 mm - 2.362mm |
15.875 mm |
632 |
6.909 mm |
|
| 632 X 0.687 |
6.198 mm - 6.350mm |
2.032 mm - 2.362mm |
17.450 mm |
632 |
6.909 mm |
|
| 632 X 0.75 |
6.198 mm - 6.350mm |
2.032 mm - 2.362mm |
19.050 mm |
632 |
6.909 mm |
|
| 632 X 0.875 |
6.198 mm - 6.350mm |
2.032 mm - 2.362mm |
22.225 mm |
632 |
6.909 mm |
|
| 632 X 1 |
6.198 mm - 6.350mm |
2.032 mm - 2.362mm |
25.400 mm |
632 |
6.909 mm |
|
| 632 X 1.125 |
6.198 mm - 6.350mm |
2.032 mm - 2.362mm |
28.575 mm |
632 |
6.909 mm |
|
| 632 X 1.25 |
6.198 mm - 6.350mm |
2.032 mm - 2.362mm |
31.750 mm |
632 |
6.909 mm |
|
| 632 X 1.5 |
6.198 mm - 6.350mm |
2.032 mm - 2.362mm |
38.100 mm |
632 |
6.909 mm |
|
| 632 X 1.625 |
6.198 mm - 6.350mm |
2.032 mm - 2.362mm |
41.275 mm |
632 |
6.909 mm |
|
| 632 X 1.75 |
6.198 mm - 6.350mm |
2.032 mm - 2.362mm |
44.450 mm |
632 |
6.909 mm |
|
| 632 X 1.875 |
6.198 mm - 6.350mm |
2.032 mm - 2.362mm |
47.625 mm |
632 |
6.909 mm |
|
| 632 X 2 |
6.198 mm - 6.350mm |
2.032 mm - 2.362mm |
50.800 mm |
632 |
6.909 mm |
|
| 632 X 2.25 |
6.198 mm - 6.350mm |
2.032 mm - 2.362mm |
57.150 mm |
632 |
6.909 mm |
|
| 640 X 0.25 |
6.198 mm - 6.350mm |
2.032 mm - 2.362mm |
6.350 mm |
640 |
6.909 mm |
|
| 640 X 0.375 |
6.198 mm - 6.350mm |
2.032 mm - 2.362mm |
9.525 mm |
640 |
6.909 mm |
|
| 640 X 0.75 |
6.198 mm - 6.350mm |
2.032 mm - 2.362mm |
19.050 mm |
640 |
6.909 mm |
|
| 640 X 1 |
6.198 mm - 6.350mm |
2.032 mm - 2.362mm |
25.400 mm |
640 |
6.909 mm |
|
| 832 X 0.125 |
6.198 mm - 6.350mm |
2.438 mm - 2.794mm |
3.175 mm |
832 |
6.909 mm |
|
| 832 X 0.187 |
6.198 mm - 6.350mm |
2.438 mm - 2.794mm |
4.750 mm |
832 |
6.909 mm |
|
| 832 X 0.25 |
6.198 mm - 6.350mm |
2.438 mm - 2.794mm |
6.350 mm |
832 |
6.909 mm |
|
| 832 X 0.281 |
5.690 mm - 6.350mm |
2.438 mm - 2.794mm |
7.137 mm |
832 |
6.909 mm |
|
| 832 X 0.312 |
6.198 mm - 6.350mm |
2.438 mm - 2.794mm |
7.925 mm |
832 |
6.909 mm |
|
| 832 X 0.375 |
6.198 mm - 6.350mm |
2.438 mm - 2.794mm |
9.525 mm |
832 |
6.909 mm |
|
| 832 X 0.437 |
6.198 mm - 6.350mm |
2.438 mm - 2.794mm |
11.100 mm |
832 |
6.909 mm |
|
| 832 X 0.5 |
6.198 mm - 6.350mm |
2.438 mm - 2.794mm |
12.700 mm |
832 |
6.909 mm |
|
| 832 X 0.625 |
6.198 mm - 6.350mm |
2.438 mm - 2.794mm |
15.875 mm |
832 |
6.909 mm |
|
| 832 X 0.75 |
6.198 mm - 6.350mm |
2.438 mm - 2.794mm |
19.050 mm |
832 |
6.909 mm |
|
| 832 X 0.875 |
6.198 mm - 6.350mm |
2.438 mm - 2.794mm |
22.225 mm |
832 |
6.909 mm |
|
| 832 X 1 |
6.198 mm - 6.350mm |
2.438 mm - 2.794mm |
25.400 mm |
832 |
6.909 mm |
|
| 832 X 1.125 |
6.198 mm - 6.350mm |
2.438 mm - 2.794mm |
28.575 mm |
832 |
6.909 mm |
|
| 832 X 1.25 |
6.198 mm - 6.350mm |
2.438 mm - 2.794mm |
31.750 mm |
832 |
6.909 mm |
|
| 832 X 1.375 |
6.198 mm - 6.350mm |
2.438 mm - 2.794mm |
34.925 mm |
832 |
6.909 mm |
|
| 832 X 1.5 |
6.198 mm - 6.350mm |
2.438 mm - 2.794mm |
38.100 mm |
832 |
6.909 mm |
|
| 832 X 1.75 |
6.198 mm - 6.350mm |
2.438 mm - 2.794mm |
44.450 mm |
832 |
6.909 mm |
|
| 832 X 1.875 |
6.198 mm - 6.350mm |
2.438 mm - 2.794mm |
47.625 mm |
832 |
6.909 mm |
|
| 832 X 2 |
6.198 mm - 6.350mm |
2.438 mm - 2.794mm |
50.800 mm |
832 |
6.909 mm |
|
| 1024 X 0.125 |
7.747 mm - 7.925mm |
2.667 mm - 3.048mm |
3.175 mm |
1024 |
8.636 mm |
|
| 1024 X 0.187 |
7.747 mm - 7.925mm |
2.667 mm - 3.048mm |
4.750 mm |
1024 |
8.636 mm |
|
| 1024 X 0.25 |
7.747 mm - 7.925mm |
2.667 mm - 3.048mm |
6.350 mm |
1024 |
8.636 mm |
|
| 1024 X 0.312 |
7.747 mm - 7.925mm |
2.667 mm - 3.048mm |
7.925 mm |
1024 |
8.636 mm |
|
| 1024 X 0.375 |
7.747 mm - 7.925mm |
2.667 mm - 3.048mm |
9.525 mm |
1024 |
8.636 mm |
|
| 1024 X 0.5 |
7.747 mm - 7.925mm |
2.667 mm - 3.048mm |
12.700 mm |
1024 |
8.636 mm |
|
| 1024 X 0.625 |
7.747 mm - 7.925mm |
2.667 mm - 3.048mm |
15.875 mm |
1024 |
8.636 mm |
|
| 1024 X 0.75 |
7.747 mm - 7.925mm |
2.667 mm - 3.048mm |
19.050 mm |
1024 |
8.636 mm |
|
| 1024 X 1 |
7.747 mm - 7.925mm |
2.667 mm - 3.048mm |
25.400 mm |
1024 |
8.636 mm |
|
| 1024 X 1.25 |
7.747 mm - 7.925mm |
2.667 mm - 3.048mm |
31.750 mm |
1024 |
8.636 mm |
|
| 1024 X 1.5 |
7.747 mm - 7.925mm |
2.667 mm - 3.048mm |
38.100 mm |
1024 |
8.636 mm |
|
| 1032 X 0.125 |
7.747 mm - 7.925mm |
2.667 mm - 3.048mm |
3.175 mm |
1032 |
8.636 mm |
|
| 1032 X 0.187 |
7.747 mm - 7.925mm |
2.667 mm - 3.048mm |
4.750 mm |
1032 |
8.636 mm |
|
| 1032 X 0.25 |
7.747 mm - 7.925mm |
2.667 mm - 3.048mm |
6.350 mm |
1032 |
8.636 mm |
|
| 1032 X 0.312 |
7.747 mm - 7.925mm |
2.667 mm - 3.048mm |
7.925 mm |
1032 |
8.636 mm |
|
| 1032 X 0.375 |
7.747 mm - 7.925mm |
2.667 mm - 3.048mm |
9.525 mm |
1032 |
8.636 mm |
|
| 1032 X 0.437 |
7.747 mm - 7.925mm |
2.667 mm - 3.048mm |
11.100 mm |
1032 |
8.636 mm |
|
| 1032 X 0.5 |
7.747 mm - 7.925mm |
2.667 mm - 3.048mm |
12.700 mm |
1032 |
8.636 mm |
|
| 1032 X 0.625 |
7.747 mm - 7.925mm |
2.667 mm - 3.048mm |
15.875 mm |
1032 |
8.636 mm |
|
| 1032 X 0.75 |
7.747 mm - 7.925mm |
2.667 mm - 3.048mm |
19.050 mm |
1032 |
8.636 mm |
|
| 1032 X 0.812 |
7.747 mm - 7.925mm |
2.667 mm - 3.048mm |
20.625 mm |
1032 |
8.636 mm |
|
| 1032 X 0.875 |
7.747 mm - 7.925mm |
2.667 mm - 3.048mm |
22.225 mm |
1032 |
8.636 mm |
|
| 1032 X 1 |
7.747 mm - 7.925mm |
2.667 mm - 3.048mm |
25.400 mm |
1032 |
8.636 mm |
|
| 1032 X 1.25 |
7.747 mm - 7.925mm |
2.667 mm - 3.048mm |
31.750 mm |
1032 |
8.636 mm |
|
| 1032 X 1.5 |
7.747 mm - 7.925mm |
2.667 mm - 3.048mm |
38.100 mm |
1032 |
8.636 mm |
|
| 1032 X 1.75 |
7.747 mm - 7.925mm |
2.667 mm - 3.048mm |
44.450 mm |
1032 |
8.636 mm |
|
| 1032 X 2 |
7.747 mm - 7.925mm |
2.667 mm - 3.048mm |
50.800 mm |
1032 |
8.636 mm |
|
| 1/4-20 X 0.25 |
9.322 mm - 9.525mm |
4.369 mm - 4.826mm |
6.350 mm |
1/4-20 |
10.389 mm |
|
| 1/4-20 X 0.312 |
9.322 mm - 9.525mm |
4.369 mm - 4.826mm |
7.925 mm |
1/4-20 |
10.389 mm |
|
| 1/4-20 X 0.375 |
9.322 mm - 9.525mm |
4.623 mm - 4.826mm |
9.525 mm |
1/4-20 |
10.389 mm |
|
| 1/4-20 X 0.5 |
9.322 mm - 9.525mm |
4.369 mm - 4.826mm |
12.700 mm |
1/4-20 |
10.389 mm |
|
| 1/4-20 X 0.625 |
9.322 mm - 9.525mm |
4.369 mm - 4.826mm |
15.875 mm |
1/4-20 |
10.389 mm |
|
| 1/4-20 X 0.75 |
9.322 mm - 9.525mm |
4.369 mm - 4.826mm |
19.050 mm |
1/4-20 |
10.389 mm |
|
| 1/4-20 X 0.875 |
9.322 mm - 9.525mm |
4.369 mm - 4.826mm |
22.225 mm |
1/4-20 |
10.389 mm |
|
| 1/4-20 X 1 |
9.322 mm - 9.525mm |
4.369 mm - 4.826mm |
25.400 mm |
1/4-20 |
10.389 mm |
|
| 1/4-20 X 1.25 |
9.322 mm - 9.525mm |
4.369 mm - 4.826mm |
31.750 mm |
1/4-20 |
10.389 mm |
|
| 1/4-20 X 1.5 |
9.322 mm - 9.525mm |
4.369 mm - 4.826mm |
38.100 mm |
1/4-20 |
10.389 mm |
|
| 1/4-20 X 1.75 |
9.322 mm - 9.525mm |
4.369 mm - 4.826mm |
44.450 mm |
1/4-20 |
10.389 mm |
|
| 1/4-20 X 2 |
9.322 mm - 9.525mm |
4.369 mm - 4.826mm |
50.800 mm |
1/4-20 |
10.389 mm |
|
| 1/4-20 X 2.5 |
9.322 mm - 9.525mm |
4.369 mm - 4.826mm |
63.500 mm |
1/4-20 |
10.389 mm |
|
| 1/4-28 X 0.187 |
9.322 mm - 9.525mm |
4.369 mm - 4.826mm |
4.750 mm |
1/4-20 |
10.389 mm |
|
| 1/4-28 X 0.25 |
9.322 mm - 9.525mm |
4.369 mm - 4.826mm |
6.350 mm |
1/4-28 |
10.389 mm |
|
| 1/4-28 X 0.375 |
9.322 mm - 9.525mm |
4.369 mm - 4.826mm |
9.525 mm |
1/4-28 |
10.389 mm |
|
| 1/4-28 X 0.625 |
9.322 mm - 9.525mm |
4.369 mm - 4.826mm |
15.875 mm |
1/4-28 |
10.389 mm |
|
| 1/4-28 X 0.75 |
9.322 mm - 9.525mm |
4.369 mm - 4.826mm |
19.050 mm |
1/4-28 |
10.389 mm |
|
| 1/4-28 X 1 |
9.322 mm - 9.525mm |
4.369 mm - 4.826mm |
25.400 mm |
1/4-28 |
10.389 mm |
|
