General
| Thread | Thread Code | H Height Ref | D Head Diameter | Drive Size Cross Recess |
|---|---|---|---|---|
| 4 - 24 | #4 | .049 | .225 / .195 | 1 |
| 6 - 20 | #6 | .060 | .279 / .238 | 2 |
| 8 - 18 | #8 | .072 | .332 / .285 | 2 |
| 10 - 16 | #10 | .083 | .385 / .333 | 2 |
| 1/4 - 14 | 1/4 | .110 | .507 / .442 | 3 |
Length
| Length | L (Length Code) ±.005 |
|---|---|
| 3/16 | .187 / .167 |
| 1/4 | .250 / .230 |
| 5/16 | .313 / .293 |
| 3/8 | .375 / .355 |
| 7/16 | .438 / .418 |
| 1/2 | .500 / .480 |
| 9/16 | .563 / .533 |
| 5/8 | .625 / .595 |
| 3/4 | .750 / .720 |
| 7/8 | .875 / .845 |
| 1 | 1.000 / .970 |
| 1 - 1/4 | 1.250 / 1.190 |
| 1 - 3/8 | 1.375 / 1.315 |
| 1 - 1/2 | 1.500 / 1.440 |
| 1 - 5/8 | 1.625 / 1.565 |
| 1 - 3/4 | 1.750 / 1.690 |
| 2 | 2.000 / 1.940 |