| FASTENER LENGTH | 1.063 INCHES MINIMUM AND 1.125 INCHES MAXIMUM |
| HEAD DIAMETER | 0.594 INCHES MINIMUM AND 0.615 INCHES MAXIMUM |
| HEAD HEIGHT | 0.203 INCHES MINIMUM AND 0.218 INCHES MAXIMUM |
| HEAD STYLE | PAN |
| INTERNAL DRIVE STYLE | CROSS RECESS TYPE 1 |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | SCREW MACHINE-PAN HEAD, CROSS RECESSED |
| MINIMUM TENSILE STRENGTH | 60000 POUNDS PER SQUARE INCH |
| NOMINAL THREAD DIAMETER | 0.312 INCHES |
| SCREW MATERIAL | STEEL |
| SCREW SURFACE TREATMENT | ZINC |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.952 INCHES MINIMUM AND 1.125 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 18 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |