| FASTENER LENGTH | 0.750 INCHES NOMINAL |
| HEAD HEIGHT | 0.208 INCHES MINIMUM AND 0.230 INCHES MAXIMUM |
| HEAD STYLE | HEXAGON |
| INTERNAL DRIVE STYLE | SLOT |
| MATERIAL | STEEL OVERALL |
| NONMACHINE NOMINAL THREAD DIAMETER | 0.313 INCHES |
| NONMACHINE THREAD STYLE | DOG TYPE (TYPE B OR C) |
| PRIMARY WASHER MATERIAL THICKNESS | 0.028 INCHES MINIMUM AND 0.034 INCHES MAXIMUM |
| PRIMARY WASHER OUTSIDE DIAMETER | 0.588 INCHES MINIMUM AND 0.610 INCHES MAXIMUM |
| PRIMARY WASHER STYLE | FLAT EXTERNAL TEETH |
| WASHER QUANTITY | 1 |
| WIDTH BETWEEN FLATS | 0.489 INCHES MINIMUM AND 0.500 INCHES MAXIMUM |
| SPECIFICATION/STANDARD DATA | 97403-13218E0549 GOVERNMENT STANDARD AND 81343-J478TB15/20 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD AND 81343-J489TB5TYA PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| SURFACE TREATMENT | CADMIUM OVERALL |
| THREAD DIRECTION | RIGHT-HAND |