| COUNTERSINK ANGLE | 80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM |
| FASTENER LENGTH | 3.500 INCHES NOMINAL |
| HEAD DIAMETER | 0.485 INCHES MINIMUM AND 0.544 INCHES MAXIMUM |
| HEAD STYLE | FLAT COUNTERSUNK |
| INTERNAL DRIVE STYLE | CROSS RECESS TYPE 1 |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-B-613,COMP 6 OR 7 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-B-626,COMP 6 OR 7 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-W-321 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | COPPER ALLOY OVERALL |
| NONDEFINITIVE SPEC/STD DATA | 1 TYPE AND 2S STYLE |
| NONMACHINE NOMINAL THREAD DIAMETER | 0.268 INCHES |
| NONMACHINE THREAD STYLE | GIMLET POINT (TYPE A, AB OR BA) |