| THREAD DIRECTION | RIGHT-HAND |
| FASTENER LENGTH | 0.6780 INCHES MINIMUM AND |
| 0.6980 INCHES MAXIMUM |
| MATERIAL | NICKEL ALLOY 718 OVERALL |
| THREAD LENGTH | 0.6530 INCHES MINIMUM AND |
| 0.6730 INCHES MAXIMUM |
| HEAD STYLE | HEXAGON |
| THREAD SERIES DESIGNATOR | UNJF |
| NOMINAL THREAD DIAMETER | 0.2500 INCHES |
| THREAD QUANTITY PER INCH | 28 |
| THREAD CLASS | 3A |
| HEAD HEIGHT | 0.1250 INCHES MINIMUM AND |
| 0.1400 INCHES MAXIMUM |
| WIDTH BETWEEN FLATS | 0.4290 INCHES MINIMUM AND |
| 0.4390 INCHES MAXIMUM |
| EXTENDED WASHER DIAMETER | 0.4290 INCHES MINIMUM AND |
| 0.4390 INCHES MAXIMUM |
| CHAMFER ANGLE | 45.0 DEGREES NOMINAL |
| GRIP LENGTH | 0.0250 INCHES MINIMUM |
| GRIP DIAMETER | 0.2220 INCHES MINIMUM AND |
| 0.2320 INCHES MAXIMUM |
| SPECIAL FEATURES | NEXT HIGHER ASSEMBLY IS LIFTFAN ASSEMBLY MODULE |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | BOLT, MACHINE - HEXAGON HEAD, PD SHANK, (STRESS RUPTURE RESISTANT) |