| FASTENER LENGTH | 1.438 INCHES MINIMUM AND 1.500 INCHES MAXIMUM |
| HEAD DIAMETER | 0.4730 INCHES MINIMUM AND 0.4920 INCHES MAXIMUM |
| HEAD HEIGHT | 0.162 INCHES MINIMUM AND 0.175 INCHES MAXIMUM |
| HEAD STYLE | PAN |
| INTERNAL DRIVE STYLE | CROSS RECESS TYPE 1 |
| MINIMUM TENSILE STRENGTH | 2540 POUNDS PER SQUARE INCH |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | SCRE, MACHINE, PAN HEAD, CROSS RECESSED, CORROSION RESISTANT STEEL, UNC-2A |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| SCREW MATERIAL | STEEL CORROSION RESISTING |
| SCREW SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-DTL-13924, CLASS 4 MIL SPEC SINGLE TREATMENT RESPONSE |
| SCREW SURFACE TREATMENT | BLACK CHEMICAL FINISH |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 1.438 INCHES MINIMUM AND 1.500 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 20 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |