| CHAMFER ANGLE | 30.0 DEGREES MINIMUM AND 45.0 DEGREES MAXIMUM |
| COLOR | BLACK OVERALL |
| FASTENER LENGTH | 2.940 INCHES MINIMUM AND 3.000 INCHES MAXIMUM |
| HARDNESS RATING | 36.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD DIAMETER | 0.550 INCHES MINIMUM AND 0.562 INCHES MAXIMUM |
| HEAD HEIGHT | 0.368 INCHES MINIMUM AND 0.375 INCHES MAXIMUM |
| HEAD STYLE | FLAT CHAMFER |
| INTERNAL DRIVE STYLE | HEXAGON |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | SCREW,CAP, SOCKET HEAD |
| MATERIAL | STEEL OVERALL |
| MINIMUM YIELD STRENGTH | 130000 POUNDS PER SQUARE INCH |
| MINIMUM TENSILE STRENGTH | 160000 POUNDS PER SQUARE INCH |
| NOMINAL THREAD DIAMETER | 0.375 INCHES |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-DTL-13924, CL I MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | OXIDE OVERALL |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 1.250 INCHES MINIMUM |
| THREAD QUANTITY PER INCH | 16 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |
| WIDTH ACROSS FLATS | 0.312 INCHES MINIMUM AND 0.316 INCHES MAXIMUM |