| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.531 INCHES NOMINAL |
| THREAD QUANTITY PER INCH | 28 |
| THREAD SERIES DESIGNATOR | UNJF |
| EXTENDED WASHER THICKNESS | 0.042 INCHES NOMINAL |
| EXTENDED WASHER DIAMETER | 0.465 INCHES MINIMUM AND 0.475 INCHES MAXIMUM |
| FASTENER LENGTH | 1.275 INCHES NOMINAL |
| GRIP DIAMETER | 0.279 INCHES MINIMUM AND 0.280 INCHES MAXIMUM |
| GRIP LENGTH | 0.744 INCHES NOMINAL |
| HEAD HEIGHT | 0.254 INCHES NOMINAL |
| HEAD STYLE | DOUBLE HEXAGON W/HOLE |
| MATERIAL | COBALT COMP MP-35-N OVERALL |
| III PART NAME ASSIGNED BY CONTROLLING AGENCY | BOLT, TENSION, EXTERNAL WRENCHING |
| PROPRIETARY CHARACTERISTICS | PACS |
| MINIMUM TENSILE STRENGTH | 260000 POUNDS PER SQUARE INCH |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| WIDTH BETWEEN FLATS | 0.304 INCHES MINIMUM AND 0.313 INCHES MAXIMUM |