| THREAD SERIES DESIGNATOR | UNJF |
| NOMINAL THREAD DIAMETER | 0.375 INCHES |
| THREAD QUANTITY PER INCH | 24 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.805 INCHES MINIMUM AND |
| 0.835 INCHES MAXIMUM |
| FASTENER LENGTH | 1.795 INCHES MINIMUM AND |
| 1.825 INCHES MAXIMUM |
| MATERIAL | STEEL CORROSION RESISTING OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS571 FED SPEC ALL MATERIAL RESPONSES OR |
| AMS5737 FED SPEC ALL MATERIAL RESPONSES OVERALL |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| HEAD STYLE | HEXAGON EXTENDED WASHER |
| HEAD HEIGHT | 0.200 INCHES MINIMUM AND |
| 0.210 INCHES MAXIMUM |
| WIDTH BETWEEN FLATS | 0.550 INCHES MINIMUM AND |
| 0.562 INCHES MAXIMUM |
| EXTENDED WASHER DIAMETER | 0.744 INCHES MINIMUM AND |
| 0.756 INCHES MAXIMUM |
| EXTENDED WASHER THICKNESS | 0.040 INCHES MINIMUM AND |
| 0.060 INCHES MAXIMUM |
| INTERNAL DRIVE STYLE | HEXAGON |
| WIDTH ACROSS FLATS | 0.610 INCHES MINIMUM |
| POINT STYLE | DOG |
| POINT LENGTH | 0.050 INCHES MAXIMUM |
| POINT DIAMETER | 0.513 INCHES MINIMUM AND |
| 0.533 INCHES MAXIMUM |
| FEATURES PROVIDED | WASHER |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | CAPTIVE ISOLATOR BOLT EDM FLARING TYPE |