| COUNTERSINK ANGLE | 80.0 DEGREES MINIMUM AND 84.0 DEGREES MAXIMUM |
| FASTENER LENGTH | 1.250 INCHES NOMINAL |
| HEAD DIAMETER | 0.480 INCHES MINIMUM AND 0.531 INCHES MAXIMUM |
| HEAD STYLE | FLAT COUNTERSUNK |
| INTERNAL DRIVE STYLE | HEXAGON |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM F835, QUENCHED AND TEMPERED ALLOY STEEL AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL OVERALL |
| NOMINAL THREAD DIAMETER | 0.2500 INCHES |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | SCREWS, CAP, HEX SOCKET, FLAT COUNTERSUNK HEAD |
| THREAD QUANTITY PER INCH | 20 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |
| WIDTH ACROSS FLATS | 0.15625 INCHES NOMINAL |
| SPECIFICATION/STANDARD DATA | 05047-ASME B18.24-2023 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | ASTM F1941, ZINC COATING FE/ZN, TYPE 3A INTERNATIONAL STD/SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | ZINC NICKEL OVERALL |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD CLASS | 2A |
| THREAD LENGTH | 0.750 INCHES NOMINAL |