| CHAMFER ANGLE | 30.0 DEGREES MINIMUM AND 45.0 DEGREES MAXIMUM |
| FASTENER LENGTH | 1.480 INCHES MINIMUM AND 1.500 INCHES MAXIMUM |
| HEAD DIAMETER | 0.543 INCHES MINIMUM AND 0.562 INCHES MAXIMUM |
| HEAD HEIGHT | 0.240 INCHES MINIMUM AND 0.250 INCHES MAXIMUM |
| HEAD STYLE | FLAT CHAMFER |
| INTERNAL DRIVE STYLE | HEXAGON |
| MATERIAL DOCUMENT AND CLASSIFICATION | UNABLE TO DECODE |
| MATERIAL | UNABLE TO DECODE |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | SCREW,SHOULDER,SOCKET HEAD,HEXAGON ALLOY STEEL OR NONFERROUS ALLOYS,UNC-3A |
| NOMINAL THREAD DIAMETER | 0.3125 INCHES |
| SHOULDER DIAMETER | |
| SHOULDER SHAPE | UNABLE TO DECODE |
| SHOULDER LENGTH | |
| SPECIFICATION/STANDARD DATA | 80205-NAS-51975 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.480 INCHES MINIMUM AND 0.500 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 18 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |
| SPECIAL FEATURES | TENSILE STRENGTH LBF IS 6,170; DOUBLE SHEAR STRENGTH LBF IS 18,150 |
| WIDTH ACROSS FLATS | 0.188 INCHES NOMINAL |