| COLOR | BLACK OVERALL |
| FASTENER LENGTH | 2.312 INCHES NOMINAL |
| HEAD DIAMETER | 0.266 INCHES MINIMUM AND 0.274 INCHES MAXIMUM |
| HEAD HEIGHT | 0.159 INCHES MINIMUM AND 0.164 INCHES MAXIMUM |
| HEAD STYLE | FLAT CHAMFER |
| INTERNAL DRIVE STYLE | HEXAGON |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS5629 TYPE PH13.8 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP XM-13 OVERALL |
| NOMINAL THREAD DIAMETER | 0.164 INCHES |
| SPECIAL FEATURES | 0.122 INCH MIN & 0.125 INCH MAX DIA. UNDERCUT EXTENDING THE UNTHREADED PORTION OF THE FASTENER |
| WIDTH ACROSS FLATS | 0.1406 INCHES MINIMUM AND 0.1426 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-13924 CLASS 3 MIL SPEC SINGLE TREATMENT RESPONSE AND QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | OXIDE AND PASSIVATE OVERALL |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.375 INCHES NOMINAL |
| THREAD QUANTITY PER INCH | 32 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |