| EXTENDED WASHER DIAMETER | 0.815 INCHES MINIMUM AND 0.835 INCHES MAXIMUM |
| EXTENDED WASHER THICKNESS | 0.052 INCHES MINIMUM AND 0.072 INCHES MAXIMUM |
| FASTENER LENGTH | 1.165 INCHES MINIMUM AND 1.185 INCHES MAXIMUM |
| HARDNESS RATING | 30.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD HEIGHT | 0.415 INCHES MINIMUM AND 0.435 INCHES MAXIMUM |
| HEAD STYLE | DOUBLE HEXAGON W/HOLE |
| HOLE CONFIGURATION STYLE | ROUND |
| HOLE DIAMETER | 0.062 INCHES NOMINAL |
| HOLE QUANTITY | 6 |
| HOLE TYPE | DRILLED |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS6304 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 601 OVERALL |
| NOMINAL THREAD DIAMETER | 0.312 INCHES |
| SHOULDER DIAMETER | 0.387 INCHES MINIMUM AND 0.389 INCHES MAXIMUM FIRST SHOULDER |
| SHOULDER SHAPE | ROUND FIRST SHOULDER |
| SHOULDER LENGTH | 0.674 INCHES MINIMUM AND 0.676 INCHES MAXIMUM FIRST SHOULDER |
| WIDTH BETWEEN FLATS | 0.616 INCHES MINIMUM AND 0.627 INCHES MAXIMUM |
| SURFACE TREATMENT | NICKEL AND CADMIUM OVERALL |
| THREAD CLASS | 1A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.500 INCHES MINIMUM |
| THREAD QUANTITY PER INCH | 24 |
| THREAD SERIES DESIGNATOR | UNF |