| THREAD SERIES DESIGNATOR | UNF |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| THREAD QUANTITY PER INCH | 28 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.622 INCHES MINIMUM AND |
| 0.652 INCHES MAXIMUM |
| FASTENER LENGTH | 1.192 INCHES MINIMUM AND |
| 1.222 INCHES MAXIMUM |
| MATERIAL | ALUMINUM ALLOY 6061 HEAD |
| STEEL COMP 301 SECONDARY WASHER |
| STEEL COMP 302 OR |
| STEEL COMP 304 OR |
| STEEL COMP 305 OR |
| STEEL COMP 310 OR |
| STEEL COMP 316 OR |
| STEEL COMP 321 OR |
| STEEL COMP 347 BEARING SURFACE OF HEAD |
| STEEL COMP 302 SPRING |
| ALUMINUM ALLOY 6061 STAND-OFF |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-225/8 FED SPEC SINGLE MATERIAL RESPONSE HEAD |
| MIL-S-5059 MIL SPEC SINGLE MATERIAL RESPONSE SECONDARY WASHER |
| QQ-W-423 COND A FED SPEC SINGLE MATERIAL RESPONSE SPRING |
| QQ-A-225/8 FED SPEC SINGLE MATERIAL RESPONSE STAND-OFF |
| SURFACE TREATMENT | ANODIZE HEAD |
| PASSIVATE SECONDARY WASHER |
| PASSIVATE SPRING |
| ANODIZE STAND-OFF |
| PASSIVATE FASTENER |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-A-8625 TYPE 1 CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE HEAD |
| QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE SECONDARY WASHER |
| QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE SPRING |
| MIL-A-8625 TYPE 1 CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE STAND-OFF |
| QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE FASTENER |
| HEAD STYLE | FLAT CHAMFER |
| HEAD DIAMETER | 0.451 INCHES NOMINAL |
| HEAD HEIGHT | 0.520 INCHES NOMINAL |
| INTERNAL DRIVE STYLE | SLOT |
| MATERIAL ACCOMMODATED THICKNESS | 0.156 INCHES MINIMUM AND |
| 0.217 INCHES MAXIMUM |
| SPECIAL FEATURES | STRAIGHT KNURL HEAD |