| COUNTERSINK ANGLE | 100.0 DEGREES NOMINAL |
| FASTENER LENGTH | 1.473 INCHES MINIMUM AND 1.493 INCHES MAXIMUM |
| GRIP LENGTH | 0.933 INCHES MINIMUM AND 0.943 INCHES MAXIMUM |
| HEAD STYLE | FLUSH COUNTERSUNK |
| HEAD MAJOR DIAMETER | 0.555 INCHES MINIMUM AND 0.560 INCHES MAXIMUM |
| LUBRICATION | SOLID FILM |
| MATERIAL | STEEL CORROSION RESISTING OVERALL |
| NOMINAL THREAD SIZE | 0.375 INCHES |
| SHANK DIAMETER | 0.373 INCHES MINIMUM AND 0.374 INCHES MAXIMUM |
| SHANK STYLE | PIN-RIVET, STRAIGHT, THREADED |
| SPECIAL FEATURES | THREAD ROLLED PER MIL-S-8879 (MODIFIED) MAJOR DIAMETER SHALL BE .364 TO .368 INCHES. |
| WIDTH BETWEEN FLATS | 0.158 INCHES MINIMUM AND 0.161 INCHES MAXIMUM |
| THREAD CLASS | 3A |
| THREAD QUANTITY PER INCH | 24 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL JOINT FINE (UNJF) |