| FASTENER LENGTH | 1.437 INCHES MINIMUM AND 1.484 INCHES MAXIMUM |
| GRIP LENGTH | 0.609 INCHES MINIMUM AND 0.641 INCHES MAXIMUM |
| GRIP DIAMETER | 0.495 INCHES MINIMUM AND 0.499 INCHES MAXIMUM |
| HEAD HEIGHT | 0.265 INCHES MINIMUM AND 0.297 INCHES MAXIMUM |
| HEAD STYLE | HEXAGON |
| MATERIAL DOCUMENT AND CLASSIFICATION | IL-B-7874 MIL SPEC 10TH MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL CORROSION RESISTING OVERALL |
| NOMINAL THREAD DIAMETER | 0.500 INCHES |
| WIDTH BETWEEN FLATS | 0.740 INCHES MINIMUM AND 0.752 INCHES MAXIMUM |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.812 INCHES MINIMUM AND 0.859 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 20 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL JOINT FINE (UNJF) |