| DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 5.135 INCHES NOMINAL FIRST HOLE |
| FASTENER LENGTH | 5.385 INCHES MINIMUM AND 5.415 INCHES MAXIMUM |
| HEAD DIAMETER | 1.980 INCHES MINIMUM AND 2.010 INCHES MAXIMUM |
| HEAD HEIGHT | 0.330 INCHES NOMINAL |
| HEAD STYLE | ROUND W/WRENCH FLATS CHAMFERED |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 4340 OVERALL |
| NOMINAL THREAD DIAMETER | 1.250 INCHES |
| SHOULDER DIAMETER | 1.497 INCHES MINIMUM AND 1.499 INCHES MAXIMUM FIRST SHOULDER |
| SHOULDER LENGTH | 4.385 INCHES NOMINAL FIRST SHOULDER |
| SHOULDER SHAPE | ROUND FIRST SHOULDER |
| SHANK UNTHREADED HOLE DIAMETER | 0.141 INCHES NOMINAL FIRST HOLE |
| WIDTH BETWEEN FLATS | 1.660 INCHES MINIMUM AND 1.690 INCHES MAXIMUM |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.990 INCHES MINIMUM AND 1.040 INCHES MAXIMUM |
| THREAD SERIES DESIGNATOR | UNF |
| THREAD QUANTITY PER INCH | 12 |