| THREAD SERIES DESIGNATOR | UNJF |
| NOMINAL THREAD DIAMETER | 0.312 INCHES |
| THREAD QUANTITY PER INCH | 24 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.444 INCHES MINIMUM AND |
| 0.494 INCHES MAXIMUM |
| FASTENER LENGTH | 0.892 INCHES MINIMUM AND |
| 0.922 INCHES MAXIMUM |
| MATERIAL | STEEL COMP 301 PRIMARY WASHER |
| STEEL COMP 303SE STAND-OFF |
| IRON ALLOY 660 FASTENER |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-5089 COND A MIL SPEC SINGLE MATERIAL RESPONSE PRIMARY WASHER |
| QQ-S-764 COND A FED SPEC SINGLE MATERIAL RESPONSE STAND-OFF |
| AMS 5731 ASSN STD SINGLE MATERIAL RESPONSE OR |
| AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE FASTENER |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| MINIMUM TENSILE STRENGTH | 160000 POUNDS PER SQUARE INCH |
| HEAD STYLE | HEXAGON |
| HEAD HEIGHT | 0.156 INCHES MINIMUM AND |
| 0.171 INCHES MAXIMUM |
| WIDTH BETWEEN FLATS | 0.492 INCHES MINIMUM AND |
| 0.502 INCHES MAXIMUM |
| WASHER QUANTITY | 1 |
| PRIMARY WASHER STYLE | FINISHING |
| PRIMARY WASHER OUTSIDE DIAMETER | 0.458 INCHES NOMINAL |
| PRIMARY WASHER MATERIAL THICKNESS | 0.064 INCHES NOMINAL |
| SPECIAL FEATURES | FURNISHED WITH ONE SPACER 5365 01 416 6516 ONE WASHER 5310 01 416 8892 AND ONE CHAN FASTENER ANGLE 4030 01 344 4411 |