| HEAD DIAMETER | 0.460 INCHES MINIMUM AND 0.490 INCHES MAXIMUM |
| HEAD COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| HEAD STYLE | FLAT COUNTERSUNK |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-430 FED SPEC 1ST MATERIAL RESPONSE OR ASTM B316 ASSN STD 1ST MATERIAL RESPONSE OR QQ-A-225/8 FED SPEC 2ND MATERIAL RESPONSE OVERALL |
| MATERIAL | ALUMINUM ALLOY 6053 OR ALUMINUM ALLOY 6061 OVERALL |
| NOMINAL THREAD SIZE | 0.250 INCHES |
| NUT DIAMETER | 0.328 INCHES MINIMUM AND 0.332 INCHES MAXIMUM |
| NUT LENGTH | 0.735 INCHES MINIMUM AND 0.765 INCHES MAXIMUM |
| NUT STYLE | BLIND RIVET W/SMOOTH ROUND SHANK |
| SHANK END TYPE | OPEN |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-A-8625, TY2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | ANODIZE OVERALL |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 28 |
| THREAD SERIES | UNF |