| THREAD SERIES DESIGNATOR | UNF |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| THREAD QUANTITY PER INCH | 28 |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.281 INCHES NOMINAL |
| FASTENER LENGTH | 1.125 INCHES NOMINAL |
| MATERIAL | STEEL CORROSION RESISTING SECONDARY WASHER |
| STEEL CORROSION RESISTING PRIMARY WASHER |
| STEEL CORROSION RESISTING SPRING |
| STEEL COMP 304 STAND-OFF |
| STEEL CORROSION RESISTING FASTENER |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-5059,300 SERIES MIL SPEC SINGLE MATERIAL RESPONSE PRIMARY WASHER |
| ASTM A313,300 SERIES ASSN STD SINGLE MATERIAL RESPONSE SPRING |
| QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE STAND-OFF |
| ASTM A493,300 SERIES ASSN STD SINGLE MATERIAL RESPONSE FASTENER |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| HEAD STYLE | PAN NO. 2 |
| HEAD DIAMETER | 0.482 INCHES NOMINAL |
| HEAD HEIGHT | 0.137 INCHES NOMINAL |
| INTERNAL DRIVE STYLE | SLOT |
| MATERIAL ACCOMMODATED THICKNESS | 0.080 INCHES MINIMUM AND |
| 0.125 INCHES MAXIMUM |