| THREAD SERIES DESIGNATOR | UNC |
| NOMINAL THREAD DIAMETER | 0.500 INCHES |
| THREAD QUANTITY PER INCH | 13 |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.750 INCHES NOMINAL |
| FASTENER LENGTH | 3.500 INCHES NOMINAL |
| MATERIAL | STEEL OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A574, ALLOY STEEL AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) SINGLE MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | ZINC OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | ASTM B633, TYPE II, SC 2 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| HEAD STYLE | FLAT CHAMFER |
| HEAD DIAMETER | 0.853 INCHES MINIMUM AND |
| 0.875 INCHES MAXIMUM |
| HEAD HEIGHT | 0.365 INCHES MINIMUM AND |
| 0.375 INCHES MAXIMUM |
| CHAMFER ANGLE | 45.0 DEGREES MINIMUM AND |
| 50.0 DEGREES MAXIMUM |
| INTERNAL DRIVE STYLE | HEXAGON |
| WIDTH ACROSS FLATS | 0.3125 INCHES NOMINAL |
| SHOULDER SHAPE | ROUND OVERALL |
| SHOULDER DIAMETER | 0.6210 INCHES MINIMUM AND |
| 0.6230 INCHES MAXIMUM OVERALL |
| SHOULDER LENGTH | 2.745 INCHES MINIMUM AND |
| 2.755 INCHES MAXIMUM OVERALL |
| SPECIFICATION/STANDARD DATA | 05047-ASME B18.24-2020 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | SCREW,SHOULDER, HEX SOCKET HEAD |