| FASTENER LENGTH | 0.594 INCHES MINIMUM AND 0.625 INCHES MAXIMUM |
| HEAD DIAMETER | 0.334 INCHES MINIMUM AND 0.359 INCHES MAXIMUM |
| HEAD HEIGHT | 0.123 INCHES MINIMUM AND 0.137 INCHES MAXIMUM |
| HEAD STYLE | ROUND |
| 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 |
| NONDEFINITIVE SPEC/STD DATA | 1 TYPE AND 1C STYLE |
| NONMACHINE NOMINAL THREAD DIAMETER | 0.190 INCHES |
| NONMACHINE THREAD STYLE | GIMLET POINT (TYPE A, AB OR BA) |