| COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| FASTENER LENGTH | 0.9350 INCHES MINIMUM AND 0.9550 INCHES MAXIMUM |
| GRIP LENGTH | 0.4950 INCHES MINIMUM AND 0.5050 INCHES MAXIMUM |
| HEAD STYLE | FLUSH COUNTERSUNK |
| HEAD MAJOR DIAMETER | 0.597 INCHES MINIMUM AND 0.604 INCHES MAXIMUM |
| LUBRICATION | DRY FILM AND CETYL ALCOHOL |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP XM-13 OVERALL |
| NOMINAL THREAD SIZE | 0.3125 INCHES |
| SHANK DIAMETER | 0.3115 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM |
| SHANK STYLE | PIN-RIVET, STRAIGHT, THREADED |
| WIDTH BETWEEN FLATS | 0.1270 INCHES MINIMUM AND 0.1295 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 24 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL JOINT FINE (UNJF) |