| FASTENER LENGTH | 4.660 INCHES MINIMUM AND 4.750 INCHES MAXIMUM |
| HEAD HEIGHT | 0.302 INCHES MINIMUM AND 0.323 INCHES MAXIMUM |
| HEAD STYLE | HEXAGON |
| INTERNAL DRIVE STYLE | W/O INTERNAL DRIVE |
| MATERIAL DOCUMENT AND CLASSIFICATION | SAE,GRADE 5 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL OVERALL |
| NOMINAL THREAD DIAMETER | 0.500 INCHES |
| PRIMARY WASHER MATERIAL THICKNESS | 0.095 INCHES MINIMUM AND 0.115 INCHES MAXIMUM |
| PRIMARY WASHER OUTSIDE DIAMETER | 0.865 INCHES MINIMUM AND 0.885 INCHES MAXIMUM |
| PRIMARY WASHER STYLE | FLAT |
| WASHER QUANTITY | 1 |
| WIDTH BETWEEN FLATS | 0.735 INCHES MINIMUM AND 0.750 INCHES MAXIMUM |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD CLASS | 2A |
| THREAD LENGTH | 1.250 INCHES MINIMUM AND 1.440 INCHES MAXIMUM |
| THREAD SERIES DESIGNATOR | UNC |
| THREAD QUANTITY PER INCH | 13 |