| THREAD SERIES DESIGNATOR | UNF |
| NOMINAL THREAD DIAMETER | 0.3125 INCHES |
| THREAD QUANTITY PER INCH | 24 |
| THREAD CLASS | STYLE 2 |
| THREAD DIRECTION | RIGHT-HAND |
| FASTENER LENGTH | 1.500 INCHES NOMINAL |
| MATERIAL | STEEL CORROSION RESISTING OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM-A-581 ASSN STD SINGLE MATERIAL RESPONSE OR |
| ASTM-A-582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | OXIDE OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-DLT-13924D,CLASS 1 OR 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| COLOR | BLACK OVERALL |
| HEAD STYLE | KNURLED NO. 4 |
| HEAD DIAMETER | 0.625 INCHES NOMINAL |
| BOTTOM COUNTERSINK DIAMETER | 0.230 INCHES NOMINAL |
| HANDLE LENGTH | 0.625 INCHES NOMINAL |
| HANDLE DIAMETER | 0.625 INCHES NOMINAL |
| HEAD HEIGHT | 0.688 INCHES NOMINAL |
| CHAMFER ANGLE | 45.0 DEGREES NOMINAL |
| INTERNAL DRIVE STYLE | SLOT |
| MATERIAL ACCOMMODATED THICKNESS | 1.500 INCHES NOMINAL |
| SPECIAL FEATURES | SLOT RUNS ACROSS HEAD OF FASTNER AND IS 3/32" WIDE |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | THUMB SCREW |