| THREAD SERIES DESIGNATOR | UNF |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| THREAD QUANTITY PER INCH | 28 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| MATERIAL | ALUMINUM ALLOY 6061 HEAD |
| STEEL COMP 301 SECONDARY WASHER |
| STEEL COMP 1050 PRIMARY WASHER |
| STEEL COMP 302 SPRING |
| ALUMINUM ALLOY 6061 STAND-OFF |
| STEEL COMP 303 FASTENER |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-225/8 FED SPEC SINGLE MATERIAL RESPONSE HEAD |
| MIL-S-5059 MIL SPEC SINGLE MATERIAL RESPONSE SECONDARY WASHER |
| SAE ASSN STD SINGLE MATERIAL RESPONSE PRIMARY WASHER |
| QQ-W-423 COND B FED SPEC SINGLE MATERIAL RESPONSE SPRING |
| QQ-A-225/8 FED SPEC SINGLE MATERIAL RESPONSE STAND-OFF |
| ASTM-A-493 ASSN STD SINGLE MATERIAL RESPONSE FASTENER |
| SURFACE TREATMENT | ANODIZE HEAD |
| PASSIVATE SECONDARY WASHER |
| CADMIUM AND |
| CHROMATE PRIMARY WASHER |
| PASSIVATE SPRING |
| ANODIZE STAND-OFF |
| PASSIVATE FASTENER |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-A-8625 TY 1 CL 1 MIL SPEC SINGLE TREATMENT RESPONSE HEAD |
| QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE SECONDARY WASHER |
| QQ-P-416 TY2 CL2 FED SPEC SINGLE TREATMENT RESPONSE PRIMARY WASHER |
| QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE SPRING |
| MIL-A-8625 TY 1 CL 1 MIL SPEC SINGLE TREATMENT RESPONSE STAND-OFF |
| QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE FASTENER |
| HEAD STYLE | KNURLED NO. 4 |
| HEAD DIAMETER | 0.531 INCHES NOMINAL |
| HEAD HEIGHT | 0.530 INCHES NOMINAL |
| INTERNAL DRIVE STYLE | SLOT |
| MATERIAL ACCOMMODATED THICKNESS | 0.047 INCHES MINIMUM AND |
| 0.109 INCHES MAXIMUM |
| SPECIAL FEATURES | ADDITIONAL WASHER FURNISHED |
| THE MANUFACTURERS DATA | |
| MANUFACTURERS CODE | 0HDW7 |
| DESIGN CONTROL REFERENCE | FRBWW7500-12-B-4 |