| FASTENER LENGTH | 2.061 INCHES MINIMUM AND 2.125 INCHES MAXIMUM |
| HEAD HEIGHT | 1.905 INCHES MINIMUM AND 1.969 INCHES MAXIMUM |
| HEAD STYLE | HEXAGON |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-6758,COND D4 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 4130 OVERALL |
| NOMINAL THREAD DIAMETER | 0.500 INCHES |
| PRIMARY WASHER MATERIAL THICKNESS | 0.155 INCHES MINIMUM AND 0.219 INCHES MAXIMUM |
| PRIMARY WASHER OUTSIDE DIAMETER | 1.218 INCHES MINIMUM AND 1.282 INCHES MAXIMUM |
| WASHER QUANTITY | 1 |
| WIDTH BETWEEN FLATS | 0.740 INCHES MINIMUM AND 0.752 INCHES MAXIMUM |
| SURFACE TREATMENT | CADMIUM OVERALL |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.843 INCHES MINIMUM AND 0.907 INCHES MAXIMUM |
| THREAD SERIES DESIGNATOR | UNF |
| THREAD QUANTITY PER INCH | 20 |