| DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 4.000 INCHES NOMINAL FIRST HOLE |
| CRITICALITY CODE JUSTIFICATION | AATN |
| EXTENDED WASHER THICKNESS | 0.125 INCHES NOMINAL |
| EXTENDED WASHER DIAMETER | 1.150 INCHES NOMINAL |
| FASTENER LENGTH | 4.125 INCHES NOMINAL |
| FEATURES PROVIDED | CASEHARDENED |
| HEAD HEIGHT | 0.375 INCHES NOMINAL |
| HEAD STYLE | HEXAGON EXTENDED WASHER |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS6265 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP E9310 OVERALL |
| NOMINAL THREAD DIAMETER | 0.500 INCHES |
| SHANK UNTHREADED HOLE DIAMETER | 0.106 INCHES NOMINAL FIRST HOLE |
| SHOULDER DIAMETER | 0.9991 INCHES MINIMUM AND 0.9994 INCHES MAXIMUM FIRST SHOULDER |
| SHOULDER LENGTH | 3.535 INCHES NOMINAL FIRST SHOULDER |
| SHOULDER SHAPE | ROUND FIRST SHOULDER |
| SPECIAL FEATURES | SHOULDER AND THREADS UNDERCUT FOR RELIEF. CARBURIZE AND PARCO LUBRIZE SHOULDER AND SHOULDER UNDERCUT |
| WIDTH BETWEEN FLATS | 0.741 INCHES MINIMUM AND 0.752 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | A000 FED STD 3RD TREATMENT RESPONSE THREADS |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 FED SPEC SINGLE TREATMENT RESPONSE PRIMARY WASHER |
| SURFACE TREATMENT | CADMIUM PRIMARY WASHER |
| SURFACE TREATMENT | CADMIUM THREADS |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD CLASS | 3A |
| THREAD QUANTITY PER INCH | 20 |
| THREAD SERIES DESIGNATOR | UNF |