| COUNTERSINK ANGLE | 80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM |
| FASTENER LENGTH | 0.460 INCHES MINIMUM AND 0.500 INCHES MAXIMUM |
| HEAD DIAMETER | 0.348 INCHES MINIMUM AND 0.385 INCHES MAXIMUM |
| HEAD STYLE | FLAT COUNTERSUNK |
| INTERNAL DRIVE STYLE | CROSS RECESS TYPE 1 |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-B-613 AL 260 FED SPEC 1ST MATERIAL RESPONSE OR QQ-B-626 AL 260 FED SPEC 1ST MATERIAL RESPONSE OR QQ-W-321 AL 260 FED SPEC 1ST MATERIAL RESPONSE OR QQ-B-613 AL 268 FED SPEC 2ND MATERIAL RESPONSE OR QQ-B-626 AL 268 FED SPEC 2ND MATERIAL RESPONSE OR QQ-W-321 AL 270 FED SPEC 3RD MATERIAL RESPONSE OVERALL |
| MATERIAL | COPPER ALLOY 260 OR COPPER ALLOY 268 OR COPPER ALLOY 270 OVERALL |
| NONMACHINE NOMINAL THREAD DIAMETER | 0.190 INCHES |
| NONMACHINE THREAD STYLE | GIMLET POINT (TYPE A, AB OR BA) |