| THREAD DIRECTION | RIGHT-HAND |
| FASTENER LENGTH | 0.562 INCHES NOMINAL |
| MATERIAL | IRON ALLOY 660 OVERALL |
| THREAD LENGTH | 0.473 INCHES NOMINAL |
| HEAD STYLE | DOUBLE HEXAGON EXTENDED WASHER |
| THREAD SERIES DESIGNATOR | UNJF |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| THREAD QUANTITY PER INCH | 28 |
| THREAD CLASS | 3A |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5731 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MINIMUM TENSILE STRENGTH | 130000 POUNDS PER SQUARE INCH |
| HEAD HEIGHT | 0.343 INCHES NOMINAL |
| WIDTH BETWEEN FLATS | 0.305 INCHES MINIMUM AND |
| 0.313 INCHES MAXIMUM |
| EXTENDED WASHER DIAMETER | 0.398 INCHES MINIMUM AND |
| 0.408 INCHES MAXIMUM |
| EXTENDED WASHER THICKNESS | 0.45 INCHES NOMINAL |
| GRIP LENGTH | 0.079 INCHES MINIMUM AND |
| 0.099 INCHES MAXIMUM |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | BOLT, MACHINE |
| SPEC/STD CONTROLLING DATA | |
| MANUFACTURERS CODE | 96906 |
| DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | MS9677-07 |