HEX CAP SCREW DIMENSIONS
Hex and Heavy Head Cap Screws - 3 inch
Part 1 of 2
Nom.
Dia. |
Wrenching
Height |
Thread Length
6" & Shorter
Over 6" |
Transition
Thread Length |
Bearing
Surface Runout |
| J |
LT |
Y |
F.I.M. |
| Min |
Nom |
Nom |
Max |
Max |
| 1/4 |
.106 |
.750 |
1.000 |
.250 |
.010 |
| 5/16 |
.140 |
.875 |
1.125 |
.278 |
.011 |
| 3/8 |
.160 |
1.000 |
1.250 |
.312 |
.012 |
| 7/16 |
.195 |
1.125 |
1.375 |
.357 |
.013 |
| 1/2 |
.215 |
1.250 |
1.500 |
.385 |
.014 |
| 9/16 |
1.375 |
1.625 |
.417 |
.015 |
.015 |
| 5/8 |
.269 |
1.500 |
1.750 |
.455 |
.017 |
| 3/4 |
.324 |
1.750 |
2.000 |
.500 |
.020 |
| 7/8 |
.378 |
2.000 |
2.250 |
.556 |
.023 |
| 1 |
.416 |
2.250 |
2.500 |
.625 |
.026 |
| 1 1/8 |
.461 |
2.500 |
2.750 |
.714 |
.029 |
| 1 1/4 |
.530 |
2.750 |
3.000 |
.714 |
.033 |
| 1 3/8 |
.569 |
3.000 |
3.250 |
.833 |
.036 |
| 1 1/2 |
.640 |
3.250 |
3.500 |
.833 |
.039 |
| 1 3/4 |
.748 |
3.750 |
4.000 |
1.000 |
.046 |
| 2 |
.825 |
4.250 |
4.500 |
1.111 |
.052 |
| 2 1/4 |
.933 |
- |
5.000 |
1.111 |
.059 |
| 2 1/2 |
1.042 |
- |
5.500 |
1.250 |
.065 |
| 2 3/4 |
1.151 |
- |
6.000 |
1.250 |
.072 |
| 3 |
1.290 |
- |
6.500 |
1.250 |
.079 |
Part 2 of 2
Nom.
Dia. |
Body
Diameter |
Width
Across Flats |
Width
Across Corners |
Head
Height |
| E |
F |
G |
H |
| Max |
Min |
Nom |
Max |
Min |
Max |
Min |
Max |
Min |
| 1/4 |
.2500 |
.2450 |
7/16 |
.438 |
.428 |
.505 |
.488 |
.163 |
.150 |
| 5/16 |
.3125 |
.3065 |
1/2 |
.500 |
.489 |
.577 |
.557 |
.211 |
.195 |
| 3/8 |
.3750 |
.3690 |
9/16 |
.562 |
.551 |
.650 |
.628 |
.243 |
.226 |
| 7/16 |
.4375 |
.4305 |
5/8 |
.625 |
.612 |
.722 |
.698 |
.291 |
.272 |
| 1/2 |
.5000 |
.4930 |
3/4 |
.750 |
.736 |
.866 |
.840 |
.323 |
.302 |
| 9/16 |
.5625 |
.5545 |
13/16 |
.812 |
.798 |
.938 |
.910 |
.371 |
.348 |
| 5/8 |
.6250 |
.6170 |
15/16 |
.938 |
.922 |
1.083 |
1.051 |
.403 |
.378 |
| 3/4 |
.7500 |
.7410 |
1 1/8 |
1.125 |
1.100 |
1.299 |
1.254 |
.483 |
.455 |
| 7/8 |
.8750 |
.8660 |
1 5/16 |
1.312 |
1.285 |
1.516 |
1.465 |
.563 |
.531 |
| 1 |
1.0000 |
.9900 |
1 1/2 |
1.500 |
1.469 |
1.732 |
1.675 |
.627 |
.591 |
| 1 1/8 |
1.1250 |
1.1140 |
1 11/16 |
1.688 |
1.631 |
1.949 |
1.859 |
.718 |
.658 |
| 1 1/4 |
1.2500 |
1.2390 |
1 7/8 |
1.875 |
1.812 |
2.165 |
2.066 |
.813 |
.749 |
| 1 3/8 |
1.3750 |
1.3630 |
2 1/16 |
2.062 |
1.994 |
2.382 |
2.273 |
.878 |
. 810 |
| 1 1/2 |
1.5000 |
1.4880 |
2 1/4 |
2.250 |
2.175 |
2.598 |
2.480 |
.974 |
.902 |
| 1 3/4 |
1.7500 |
1.7380 |
2 5/8 |
2.625 |
2.538 |
3.031 |
2.893 |
1.134 |
1.054 |
| 2 |
2.0000 |
1.9880 |
3 |
3.000 |
2.900 |
3.464 |
3.306 |
1.263 |
1.175 |
| 2 1/4 |
2.2500 |
2.230 |
3 3/8 |
3.375 |
3.262 |
3.897 |
3.719 |
1.423 |
1.327 |
| 2 1/2 |
2.5000 |
2.4880 |
3 3/4 |
3.750 |
3.625 |
4.330 |
4.133 |
1.583 |
1.479 |
| 2 3/4 |
2.7500 |
2.7380 |
4 1/8 |
4.125 |
3.988 |
4.763 |
4.546 |
1.744 |
1.632 |
| 3 |
3.0000 |
2.9880 |
4 1/2 |
4.500 |
4.350 |
5.196 |
4.959 |
1.935 |
1.815 |
Hex and Heavy Head Cap Screws - 6 inch
Part 1 of 2
| Nominal Diameter |
Width
Across Flats |
Thickness |
Jam Nut
Thickness |
Width
Across Corners |
| F |
H |
J |
G |
| 1/4 |
.500/.488 |
.250/.218 |
.188/.156 |
.577/.556 |
| 5/16 |
.562/.546 |
.314/.280 |
.220/.186 |
.650/.622 |
| 3/8 |
.688/.669 |
.377/.341 |
.252/.216 |
.794/.763 |
| 7/16 |
.750/.728 |
.441/.403 |
.285/.247 |
.866/.830 |
| 1/2 |
.875/.850 |
.504/.464 |
.317/.277 |
1.010/.969 |
| 9/16 |
.938/.909 |
.568/.526 |
.349/.307 |
1.083/1.037 |
| 5/8 |
1.062/1.031 |
.631/.587 |
.381/.337 |
1.227/1.175 |
| 3/4 |
1.250/1.212 |
.758/.710 |
.446/.398 |
1.443/1.382 |
| 7/8 |
1.438/1.394 |
.885/.833 |
.510/.458 |
1.660/1.589 |
| 1 |
1.625/1.575 |
1.012/.956 |
.575/.519 |
1.876/1.796 |
| 1 1/8 |
1.812/1.756 |
1.139/1.079 |
.639/.579 |
2.093/2.002 |
| 1 1/4 |
2.000/1.938 |
1.251/1.187 |
.751/.687 |
2.309/2.209 |
| 1 3/8 |
2.188/2.119 |
1.378/1.310 |
.815/.747 |
2.526/2.416 |
| 1 1/2 |
2.375/2.300 |
1.505/1.443 |
.880/.808 |
2.742/2.626 |
| 1 5/8 |
2.562/2.481 |
1.632/1.556 |
.944/.868 |
2.481/2.959 |
| 1 3/4 |
2.750/2.662 |
1.759/1.679 |
1.009/.929 |
3.175/3.035 |
| 1 7/8 |
2.938/2.844 |
1.886/1.802 |
1.073/.989 |
3.392/3.242 |
| 2 |
3.125/3.025 |
2.013/1.925 |
1.138/1.050 |
3.608/3.449 |
| 2 1/4 |
3.500/3.388 |
2.251/2.155 |
1.251/1.155 |
4.041/3.862 |
| 2 1/2 |
3.875/3.750 |
2.505/2.401 |
1.505/1.401 |
4.474/4.275 |
| 2 3/4 |
4.250/4.112 |
2.759/2.647 |
1.634/1.522 |
4.907/4.688 |
| 3 |
4.625/4.475 |
3.013/2.893 |
1.763/1.643 |
5.340/5.102 |
| 3 1/4 |
5.000/4.838 |
3.252/3.124 |
1.876/1.748 |
5.774/5.515 |
| 3 1/2 |
5.375/5.200 |
3.506/3.370 |
2.006/1.870 |
6.207/5.928 |
| 3 3/4 |
5.750/5.562 |
3.760/3.616 |
2.134/1.990 |
6.640/6.341 |
| 4 |
6.125/5.925 |
4.014/3.862 |
2.264/2.112 |
7.073/6.755 |
| 4 1/4 |
6.500/6.283 |
4.268/4.108 |
2.393/2.233 |
7.506/7.168 |
| 4 1/2 |
6.875/6.650 |
4.522/4.354 |
2.522/2.354 |
7.939/7.581 |
| 4 3/4 |
7.250/7.012 |
4.776/4.600 |
2.651/2.475 |
8.372/7.994 |
| 5 |
7.625/7.375 |
5.030/4.846 |
2.780/2.596 |
8.805/8.408 |
| 5 1/4 |
8.000/7.738 |
5.284/5.092 |
2.909/2.717 |
9.238/8.821 |
| 5 1/2 |
8.375/8.100 |
5.538/5.338 |
3.083/2.838 |
9.671/9.234 |
| 5 3/4 |
8.750/8.462 |
5.792/5.584 |
3.167/2.959 |
10.104/9.647 |
| 6 |
9.125/8.825 |
6.046/5.830 |
3.296/3.080 |
10.537/10.060 |
Part 2 of 2
| Nominal Diameter |
Bearing
Surface Dia. |
Countersink Dia. |
F.I.M. |
F.I.IM. |
Unslotted
Thickness |
Slot Width |
| * |
** |
T |
S |
|
|
| 1/4 |
.500/.463 |
.280 |
.017 |
.011 |
.15/.13 |
.10/.07 |
| 5/16 |
.562/.518 |
.342 |
.020 |
.012 |
.21/.19 |
.12/.09 |
| 3/8 |
.688/.635 |
.405 |
.021 |
.014 |
.24/.22 |
.15/.12 |
| 7/16 |
.750/.691 |
.472 |
.022 |
.015 |
.28/.26 |
.15/.12 |
| 1/2 |
.875/.807 |
.540 |
.023 |
.016 |
.34/.32 |
.18/.15 |
| 9/16 |
.938/.863 |
.607 |
.024 |
.017 |
.37/.35 |
.18/.15 |
| 5/8 |
1.062/.979 |
.675 |
.025 |
.018 |
.40/.38 |
.24/.18 |
| 3/4 |
1.250/1.151 |
.810 |
.027 |
.020 |
.49/.47 |
.24/.18 |
| 7/8 |
1.438/1.324 |
.945 |
.029 |
.022 |
.62/.59 |
.24/.18 |
| 1 |
1.625/1.496 |
1.080 |
.031 |
.024 |
.72/.69 |
.30/.24 |
| 1 1/8 |
1.812/1.668 |
1.215 |
.033 |
.027 |
.78/.75 |
.33/.24 |
| 1 1/4 |
2.000/1.841 |
1.350 |
.035 |
.030 |
.86/.83 |
.40/.31 |
| 1 3/8 |
2.188/2.013 |
1.485 |
.038 |
.033 |
.99/.95 |
.40/.31 |
| 1 1/2 |
2.375/2.185 |
1.620 |
.041 |
.036 |
1.05/1.01 |
.46/.37 |
| 1 5/8 |
2.562/2.357 |
1.755 |
.044 |
.038 |
1.14/1.10 |
.46/.37 |
| 1 3/4 |
2.750/2.529 |
1.890 |
.048 |
.041 |
1.24/1.20 |
.52/.43 |
| 1 7/8 |
2.938/2.702 |
2.025 |
.051 |
.044 |
1.33/1.29 |
.52/.43 |
| 2 |
3.125/2.874 |
2.160 |
.055 |
.047 |
1.43/1.38 |
.52/.43 |
| 2 1/4 |
3.500/3.218 |
2.430 |
.061 |
.052 |
1.67/1.62 |
.52/.43 |
| 2 1/2 |
3.875/3.563 |
2.700 |
.068 |
.058 |
1.79/1.74 |
.64/.55 |
| 2 3/4 |
4.250/3.906 |
2.970 |
.074 |
.064 |
2.05/1.99 |
.64/.55 |
| 3 |
4.625/4.251 |
3.240 |
.081 |
.070 |
2.23/2.17 |
.71/.62 |
| 3 1/4 |
5.000/4.596 |
3.510 |
.087 |
.075 |
2.47/2.41 |
.71/.62 |
| 3 1/2 |
5.375/4.940 |
3.870 |
.094 |
.081 |
2.72/2.65 |
.71/.62 |
| 3 3/4 |
5.750/5.284 |
4.050 |
.100 |
.087 |
2.97/2.90 |
.71/.62 |
| 4 |
6.125/5.629 |
4.320 |
.107 |
.093 |
3.22/3.15 |
.71/.62 |
| 4 1/4 |
6.500/5.973 |
4.590 |
.113 |
.098 |
|
|
| 4 1/2 |
6.875/6.317 |
4.860 |
.120 |
.104 |
|
|
| 4 3/4 |
7.250/6.661 |
5.130 |
.127 |
.110 |
|
|
| 5 |
7.625/7.006 |
5.400 |
.133 |
.116 |
|
|
| 5 1/4 |
8.000/7.351 |
5.670 |
.140 |
.121 |
|
|
| 5 1/2 |
8.375/7.695 |
5.940 |
.146 |
.127 |
|
|
| 5 3/4 |
8.750/8.039 |
6.210 |
.153 |
.132 |
|
|
| 6 |
9.125/8.384 |
6.480 |
.159 |
.139 |
|
|
* = T.I.R. for Hex Nuts with Proof Loads less than 150,000 PSI and all Hex Jam and Slotted Nuts.
**= T.I.R. for Hex Nuts with Proof Loads equal to 150,000 PSI or greater.
Note: the contour of the bottom of the slot is optional (flat or rounded).