| COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| DEPARTURE FROM CITED DESIGNATOR | AS MODIFIED BY FASTENER LENGTH AND SURFACE TREATMENT |
| FASTENER LENGTH | 0.562 INCHES NOMINAL |
| HEAD DIAMETER | 0.285 INCHES MINIMUM AND 0.303 INCHES MAXIMUM |
| HEAD STYLE | FLAT COUNTERSUNK |
| INTERNAL DRIVE STYLE | SLOT |
| NOMINAL THREAD DIAMETER | 0.164 INCHES |
| SCREW MATERIAL DOCUMENT AND CLASSIFICATION | K7766-BS970 EN58 SERIES NATIONAL STD/SPEC SINGLE MATERIAL RESPONSE |
| SCREW MATERIAL | STEEL CORROSION RESISTING |
| SCREW SURFACE TREATMENT | CADMIUM |
| SCREW SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | K0379-DTD904 GOVERNMENT STD/SPEC SINGLE TREATMENT RESPONSE |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.489 INCHES NOMINAL |
| THREAD QUANTITY PER INCH | 32 |
| THREAD SERIES DESIGNATOR | UNC |