* This dimension +/- .010
| 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, Teflon®, G10, Kel-F®, Delrin/Acetal, Neoprene, Mylar, Glass-Filled Nylon, Peek, CPVC, ABS, PVDF / Kynar, Isoplast, Polycarbonate, Polyethylene, or Ultem®
Economy Grade Thumb Screws Variations
| Description | A | H | J | Length | T | Thread Size | Quote |
| 440 X 0.093 | 8.052 mm | 5.486 mm | 0.762 mm | 2.362 mm | 1.016 mm | 440 |  |
| 440 X 0.125 | 8.052 mm | 5.486 mm | 0.762 mm | 3.175 mm | 1.016 mm | 440 |  |
| 440 X 0.141 | 8.052 mm | 5.486 mm | 0.762 mm | 3.581 mm | 1.016 mm | 440 |  |
| 440 X 0.187 | 8.052 mm | 5.486 mm | 0.762 mm | 4.750 mm | 1.016 mm | 440 |  |
| 440 X 0.25 | 8.052 mm | 5.486 mm | 0.762 mm | 6.350 mm | 1.016 mm | 440 |  |
| 440 X 0.281 | 8.052 mm | 5.486 mm | 0.762 mm | 7.137 mm | 1.016 mm | 440 |  |
| 440 X 0.312 | 8.052 mm | 5.486 mm | 0.762 mm | 7.925 mm | 1.016 mm | 440 |  |
| 440 X 0.375 | 8.052 mm | 5.486 mm | 0.762 mm | 9.525 mm | 1.016 mm | 440 |  |
| 440 X 0.437 | 8.052 mm | 5.486 mm | 0.762 mm | 11.100 mm | 1.016 mm | 440 |  |
| 440 X 0.5 | 8.052 mm | 5.486 mm | 0.762 mm | 12.700 mm | 1.016 mm | 440 |  |
| 440 X 0.562 | 8.052 mm | 5.486 mm | 0.762 mm | 14.288 mm | 1.016 mm | 440 |  |
| 440 X 0.625 | 8.052 mm | 5.486 mm | 0.762 mm | 15.875 mm | 1.016 mm | 440 |  |
| 440 X 0.687 | 8.052 mm | 5.486 mm | 0.762 mm | 17.450 mm | 1.016 mm | 440 |  |
| 440 X 0.75 | 8.052 mm | 5.486 mm | 0.762 mm | 19.050 mm | 1.016 mm | 440 |  |
| 440 X 0.875 | 8.052 mm | 5.486 mm | 0.762 mm | 22.225 mm | 1.016 mm | 440 |  |
| 440 X 1 | 8.052 mm | 5.486 mm | 0.762 mm | 25.400 mm | 1.016 mm | 440 |  |
| 440 X 1.125 | 8.052 mm | 5.486 mm | 0.762 mm | 28.575 mm | 1.016 mm | 440 |  |
| 440 X 1.187 | 8.052 mm | 5.486 mm | 0.762 mm | 30.150 mm | 1.016 mm | 440 |  |
| 440 X 1.25 | 8.052 mm | 5.486 mm | 0.762 mm | 31.750 mm | 1.016 mm | 440 |  |
| 440 X 1.375 | 8.052 mm | 5.486 mm | 0.762 mm | 34.925 mm | 1.016 mm | 440 |  |
| 440 X 1.5 | 8.052 mm | 5.486 mm | 0.762 mm | 38.100 mm | 1.016 mm | 440 |  |
| 440 X 1.75 | 8.052 mm | 5.486 mm | 0.762 mm | 44.450 mm | 1.016 mm | 440 |  |
| 448 X 0.25 | 8.052 mm | 5.486 mm | 0.762 mm | 6.350 mm | 1.016 mm | 440 |  |
| 632 X 0.093 | 8.534 mm | 6.172 mm | 0.762 mm | 2.388 mm | 1.016 mm | 632 |  |
| 632 X 0.125 | 8.534 mm | 6.172 mm | 0.762 mm | 3.175 mm | 1.016 mm | 632 |  |
| 632 X 0.156 | 8.534 mm | 6.172 mm | 0.762 mm | 3.962 mm | 1.016 mm | 632 |  |
| 632 X 0.187 | 8.534 mm | 6.172 mm | 0.762 mm | 4.750 mm | 1.016 mm | 632 |  |
| 632 X 0.25 | 8.534 mm | 6.172 mm | 0.762 mm | 6.350 mm | 1.016 mm | 632 |  |
| 632 X 0.312 | 8.534 mm | 6.172 mm | 0.762 mm | 7.925 mm | 1.016 mm | 632 |  |
| 632 X 0.375 | 8.534 mm | 6.172 mm | 0.762 mm | 9.525 mm | 1.016 mm | 632 |  |
| 632 X 0.437 | 8.534 mm | 6.172 mm | 0.762 mm | 11.100 mm | 1.016 mm | 632 |  |
| 632 X 0.5 | 8.534 mm | 6.172 mm | 0.762 mm | 12.700 mm | 1.016 mm | 632 |  |
| 632 X 0.562 | 8.534 mm | 6.172 mm | 0.762 mm | 14.275 mm | 1.016 mm | 632 |  |
| 632 X 0.625 | 8.534 mm | 6.172 mm | 0.762 mm | 15.875 mm | 1.016 mm | 632 |  |
| 632 X 0.687 | 8.534 mm | 6.172 mm | 0.762 mm | 17.450 mm | 1.016 mm | 632 |  |
| 632 X 0.75 | 8.534 mm | 6.172 mm | 0.762 mm | 19.050 mm | 1.016 mm | 632 |  |
| 632 X 0.875 | 8.534 mm | 6.172 mm | 0.762 mm | 22.225 mm | 1.016 mm | 632 |  |
| 632 X 1 | 8.534 mm | 6.172 mm | 0.762 mm | 25.400 mm | 1.016 mm | 632 |  |
| 632 X 1.125 | 8.534 mm | 6.172 mm | 0.762 mm | 28.575 mm | 1.016 mm | 632 |  |
| 632 X 1.25 | 8.534 mm | 6.172 mm | 0.762 mm | 31.750 mm | 1.016 mm | 632 |  |
| 632 X 1.5 | 8.534 mm | 6.172 mm | 0.762 mm | 38.100 mm | 1.016 mm | 632 |  |
| 632 X 1.625 | 8.534 mm | 6.172 mm | 0.762 mm | 41.275 mm | 1.016 mm | 632 |  |
| 632 X 1.75 | 8.534 mm | 6.172 mm | 0.762 mm | 44.450 mm | 1.016 mm | 632 |  |
| 632 X 1.875 | 8.534 mm | 6.172 mm | 0.762 mm | 47.625 mm | 1.016 mm | 632 |  |
| 632 X 2.25 | 8.534 mm | 6.172 mm | 0.762 mm | 57.150 mm | 1.016 mm | 632 |  |
| 640 X 0.25 | 8.534 mm | 6.172 mm | 0.762 mm | 6.350 mm | 1.016 mm | 632 |  |
| 640 X 0.375 | 8.534 mm | 6.172 mm | 0.762 mm | 9.525 mm | 1.016 mm | 632 |  |
| 640 X 0.75 | 8.534 mm | 6.172 mm | 0.762 mm | 19.050 mm | 1.016 mm | 632 |  |
| 640 X 1 | 8.534 mm | 6.172 mm | 0.762 mm | 25.400 mm | 1.016 mm | 632 |  |
| 832 X 0.125 | 9.677 mm | 7.112 mm | 0.889 mm | 3.175 mm | 1.143 mm | 832 |  |
| 832 X 0.187 | 9.677 mm | 7.112 mm | 0.889 mm | 4.750 mm | 1.143 mm | 832 |  |
| 832 X 0.25 | 9.677 mm | 7.112 mm | 0.889 mm | 6.350 mm | 1.143 mm | 832 |  |
| 832 X 0.281 | 9.677 mm | 7.112 mm | 0.889 mm | 7.137 mm | 1.143 mm | 832 |  |
| 832 X 0.312 | 9.677 mm | 7.112 mm | 0.889 mm | 7.925 mm | 1.143 mm | 832 |  |
| 832 X 0.375 | 9.677 mm | 7.112 mm | 0.889 mm | 9.525 mm | 1.143 mm | 832 |  |
| 832 X 0.437 | 9.677 mm | 7.112 mm | 0.889 mm | 11.100 mm | 1.143 mm | 832 |  |
| 832 X 0.5 | 9.677 mm | 7.112 mm | 0.889 mm | 12.700 mm | 1.143 mm | 832 |  |
| 832 X 0.625 | 9.677 mm | 7.112 mm | 0.889 mm | 15.875 mm | 1.143 mm | 832 |  |
| 832 X 0.75 | 9.677 mm | 7.112 mm | 0.889 mm | 19.050 mm | 1.143 mm | 832 |  |
| 832 X 0.875 | 9.677 mm | 7.112 mm | 0.889 mm | 22.225 mm | 1.143 mm | 832 |  |
| 832 X 1 | 9.677 mm | 7.112 mm | 0.889 mm | 25.400 mm | 1.143 mm | 832 |  |
| 832 X 1.125 | 9.677 mm | 7.112 mm | 0.889 mm | 28.575 mm | 1.143 mm | 832 |  |
| 832 X 1.25 | 9.677 mm | 7.112 mm | 0.889 mm | 31.750 mm | 1.143 mm | 832 |  |
| 832 X 1.375 | 9.677 mm | 7.112 mm | 0.889 mm | 34.925 mm | 1.143 mm | 832 |  |
| 832 X 1.5 | 9.677 mm | 7.112 mm | 0.889 mm | 38.100 mm | 1.143 mm | 832 |  |
| 832 X 1.75 | 9.677 mm | 7.112 mm | 0.889 mm | 44.450 mm | 1.143 mm | 832 |  |
| 832 X 1.875 | 9.677 mm | 7.112 mm | 0.889 mm | 47.625 mm | 1.143 mm | 832 |  |
| 832 X 2 | 9.677 mm | 7.112 mm | 0.889 mm | 50.800 mm | 1.143 mm | 832 |  |
| 1024 X 0.125 | 10.033 mm | 7.747 mm | 1.016 mm | 3.175 mm | 1.651 mm | 1024 |  |
| 1024 X 0.187 | 10.033 mm | 7.747 mm | 1.016 mm | 4.750 mm | 1.651 mm | 1024 |  |
| 1024 X 0.25 | 10.033 mm | 7.747 mm | 1.016 mm | 6.350 mm | 1.651 mm | 1024 |  |
| 1024 X 0.312 | 10.033 mm | 7.747 mm | 1.016 mm | 7.925 mm | 1.651 mm | 1024 |  |
| 1024 X 0.375 | 10.033 mm | 7.747 mm | 1.016 mm | 9.525 mm | 1.651 mm | 1024 |  |
| 1024 X 0.5 | 10.033 mm | 7.747 mm | 1.016 mm | 12.700 mm | 1.651 mm | 1024 |  |
| 1024 X 0.625 | 10.033 mm | 7.747 mm | 1.016 mm | 15.875 mm | 1.651 mm | 1024 |  |
| 1024 X 0.75 | 10.033 mm | 7.747 mm | 1.016 mm | 19.050 mm | 1.651 mm | 1024 |  |
| 1024 X 1 | 10.033 mm | 7.747 mm | 1.016 mm | 25.400 mm | 1.651 mm | 1024 |  |
| 1024 X 1.25 | 10.033 mm | 7.747 mm | 1.016 mm | 31.750 mm | 1.651 mm | 1024 |  |
| 1024 X 1.5 | 10.033 mm | 7.747 mm | 1.016 mm | 38.100 mm | 1.651 mm | 1024 |  |
| 1032 X 0.125 | 10.033 mm | 7.747 mm | 1.016 mm | 3.175 mm | 1.651 mm | 1032 |  |
| 1032 X 0.187 | 10.033 mm | 7.747 mm | 1.016 mm | 4.750 mm | 1.651 mm | 1032 |  |
| 1032 X 0.25 | 10.033 mm | 7.747 mm | 1.016 mm | 6.350 mm | 1.651 mm | 1032 |  |
| 1032 X 0.312 | 10.033 mm | 7.747 mm | 1.016 mm | 7.925 mm | 1.651 mm | 1032 |  |
| 1032 X 0.375 | 10.033 mm | 7.747 mm | 1.016 mm | 9.525 mm | 1.651 mm | 1032 |  |
| 1032 X 0.437 | 10.033 mm | 7.747 mm | 1.016 mm | 11.100 mm | 1.651 mm | 1032 |  |
| 1032 X 0.5 | 10.033 mm | 7.747 mm | 1.016 mm | 12.700 mm | 1.651 mm | 1032 |  |
| 1032 X 0.625 | 10.033 mm | 7.747 mm | 1.016 mm | 15.875 mm | 1.651 mm | 1032 |  |
| 1032 X 0.75 | 10.033 mm | 7.747 mm | 1.016 mm | 19.050 mm | 1.651 mm | 1032 |  |
| 1032 X 0.812 | 10.033 mm | 7.747 mm | 1.016 mm | 20.625 mm | 1.651 mm | 1032 |  |
| 1032 X 0.875 | 10.033 mm | 7.747 mm | 1.016 mm | 22.225 mm | 1.651 mm | 1032 |  |
| 1032 X 1 | 10.033 mm | 7.747 mm | 1.016 mm | 25.400 mm | 1.651 mm | 1032 |  |
| 1032 X 1.25 | 10.033 mm | 7.747 mm | 1.016 mm | 31.750 mm | 1.651 mm | 1032 |  |
| 1032 X 1.5 | 10.033 mm | 7.747 mm | 1.016 mm | 38.100 mm | 1.651 mm | 1032 |  |
| 1032 X 1.75 | 10.033 mm | 7.747 mm | 1.016 mm | 44.450 mm | 1.651 mm | 1032 |  |
| 1032 X 2 | 10.033 mm | 7.747 mm | 1.016 mm | 50.800 mm | 1.651 mm | 1032 |  |
| 1/4-20 X 0.25 | 12.192 mm | 7.747 mm | 1.143 mm | 6.350 mm | 1.651 mm | 1/4-20 |  |
| 1/4-20 X 0.312 | 12.192 mm | 7.747 mm | 1.143 mm | 7.925 mm | 1.651 mm | 1/4-20 |  |
| 1/4-20 X 0.375 | 12.192 mm | 7.747 mm | 1.143 mm | 9.525 mm | 1.651 mm | 1/4-20 |  |
| 1/4-20 X 0.5 | 12.192 mm | 7.747 mm | 1.143 mm | 12.700 mm | 1.651 mm | 1/4-20 |  |
| 1/4-20 X 0.625 | 12.192 mm | 7.747 mm | 1.143 mm | 15.875 mm | 1.651 mm | 1/4-20 |  |
| 1/4-20 X 0.75 | 12.192 mm | 7.747 mm | 1.143 mm | 19.050 mm | 1.651 mm | 1/4-20 |  |
| 1/4-20 X 0.875 | 12.192 mm | 7.747 mm | 1.143 mm | 22.225 mm | 1.651 mm | 1/4-20 |  |
| 1/4-20 X 1 | 12.192 mm | 7.747 mm | 1.143 mm | 25.400 mm | 1.651 mm | 1/4-20 |  |
| 1/4-20 X 1.25 | 12.192 mm | 7.747 mm | 1.143 mm | 31.750 mm | 1.651 mm | 1/4-20 |  |
| 1/4-20 X 1.5 | 12.192 mm | 7.747 mm | 1.143 mm | 38.100 mm | 1.651 mm | 1/4-20 |  |
| 1/4-20 X 1.75 | 12.192 mm | 7.747 mm | 1.143 mm | 44.450 mm | 1.651 mm | 1/4-20 |  |
| 1/4-20 X 2 | 12.192 mm | 7.747 mm | 1.143 mm | 50.800 mm | 1.651 mm | 1/4-20 |  |
| 1/4-20 X 2.5 | 12.192 mm | 7.747 mm | 1.143 mm | 63.500 mm | 1.651 mm | 1/4-20 |  |
| 1/4-28 X 0.187 | 12.192 mm | 7.747 mm | 1.143 mm | 4.750 mm | 1.651 mm | 1/4-28 |  |
| 1/4-28 X 0.25 | 12.192 mm | 7.747 mm | 1.143 mm | 6.350 mm | 1.651 mm | 1/4-28 |  |
| 1/4-28 X 0.375 | 12.192 mm | 7.747 mm | 1.143 mm | 9.525 mm | 1.651 mm | 1/4-28 |  |
| 1/4-28 X 0.5 | 12.192 mm | 7.747 mm | 1.143 mm | 12.700 mm | 1.651 mm | 1/4-28 |  |
| 1/4-28 X 0.75 | 12.192 mm | 7.747 mm | 1.143 mm | 19.050 mm | 1.651 mm | 1/4-28 |  |
| 1/4-28 X 1 | 12.192 mm | 7.747 mm | 1.143 mm | 25.400 mm | 1.651 mm | 1/4-28 |  |