| CHAMFER ANGLE | 30.0 DEGREES MINIMUM AND 45.0 DEGREES MAXIMUM |
| HEAD DIAMETER | 0.357 INCHES MINIMUM AND 0.375 INCHES MAXIMUM |
| HEAD HEIGHT | 0.177 INCHES MINIMUM AND 0.188 INCHES MAXIMUM |
| INTERNAL DRIVE STYLE | HEXAGON |
| MATERIAL | STEEL OVERALL |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| SHOULDER DIAMETER | 0.2460 INCHES MINIMUM AND 0.2480 INCHES MAXIMUM OVERALL |
| SHOULDER LENGTH | 0.375 INCHES NOMINAL OVERALL |
| SHOULDER SHAPE | ROUND OVERALL |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | SCREW, SHOULDER |
| WIDTH ACROSS FLATS | 0.125 INCHES NOMINAL |
| SPECIFICATION/STANDARD DATA | NASM 51975 NATIONAL STD/SPEC |
| SURFACE TREATMENT | CADMIUM OVERALL |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.355 INCHES MINIMUM AND 0.375 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 24 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |