| HEAD DIAMETER | 0.650 INCHES MINIMUM AND 0.680 INCHES MAXIMUM |
| HEAD HEIGHT | 0.062 INCHES NOMINAL |
| HEAD STYLE | FLAT |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM-B316,UNS A96053 ASSN STD 1ST MATERIAL RESPONSE OR QQ-A-430, UNS A96053 FED SPEC 2ND MATERIAL RESPONSE OVERALL |
| MATERIAL | ALUMINUM ALLOY 6053 OVERALL |
| NOMINAL THREAD SIZE | 0.3125 INCHES |
| NUT DIAMETER | 0.409 INCHES MINIMUM AND 0.413 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 |
| SPECIAL FEATURES | KEYWAY DEPTH IS 0.097 MIN-0.102 MAX; KEYWAY DIAMETER IS 0.128 MIN-0.131MAX |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-A-8625, TY 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | ANODIZE OVERALL |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 18 |
| THREAD SERIES | UNIFIED NATIONAL COARSE (UNC) |