| THREAD SERIES DESIGNATOR | UNJF |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| THREAD QUANTITY PER INCH | 28 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.420 INCHES NOMINAL |
| FASTENER LENGTH | 1.030 INCHES MINIMUM AND |
| 1.060 INCHES MAXIMUM |
| MATERIAL | STEEL CORROSION RESISTING WASHER |
| STEEL CORROSION RESISTING SLEEVE |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-5059 MIL STD SINGLE MATERIAL RESPONSE WASHER |
| ASTM-A-313 ASSN STD SINGLE MATERIAL RESPONSE SLEEVE |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| MINIMUM TENSILE STRENGTH | 5240 POUNDS PER SQUARE INCH |
| HEAD STYLE | FLAT FILLISTER |
| HEAD DIAMETER | 0.365 INCHES MINIMUM AND |
| 0.375 INCHES MAXIMUM |
| HEAD HEIGHT | 0.250 INCHES NOMINAL |
| EXTENDED WASHER DIAMETER | 0.485 INCHES MINIMUM AND |
| 0.505 INCHES MAXIMUM |
| EXTENDED WASHER THICKNESS | 0.030 INCHES NOMINAL |
| INTERNAL DRIVE STYLE | HEXAGON |
| WIDTH ACROSS FLATS | 0.188 INCHES NOMINAL |
| MATERIAL ACCOMMODATED THICKNESS | 0.265 INCHES MINIMUM |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | BOLT,CAPTIVE |