| EXTENDED WASHER DIAMETER | 0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM |
| EXTENDED WASHER THICKNESS | 0.059 INCHES MINIMUM AND 0.079 INCHES MAXIMUM |
| FASTENER LENGTH | 0.923 INCHES MINIMUM AND 0.953 INCHES MAXIMUM |
| GRIP DIAMETER | 0.249 INCHES MINIMUM AND 0.250 INCHES MAXIMUM |
| GRIP LENGTH | 0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM |
| HEAD HEIGHT | 0.224 INCHES MINIMUM AND 0.244 INCHES MAXIMUM |
| HEAD STYLE | DOUBLE HEXAGON W/HOLE |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | BOLT-TENSION, EXTERNAL WRENCHING |
| MATERIAL | NICKEL ALLOY 718 OVERALL |
| MINIMUM TENSILE STRENGTH | 180000 POUNDS PER SQUARE INCH |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| WIDTH BETWEEN FLATS | 0.312 INCHES NOMINAL |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.500 INCHES NOMINAL |
| THREAD QUANTITY PER INCH | 28 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL JOINT FINE (UNJF) |