| COUNTERSINK ANGLE | 100.0 DEGREES NOMINAL |
| FASTENER LENGTH | 1.687 INCHES MINIMUM AND 1.707 INCHES MAXIMUM |
| GRIP LENGTH | 1.057 INCHES MINIMUM AND 1.067 INCHES MAXIMUM |
| HEAD STYLE | FLUSH COUNTERSUNK |
| HEAD MAJOR DIAMETER | 0.662 INCHES MINIMUM AND 0.668 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5731 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | IRON ALLOY 660 OVERALL |
| MINIMUM TENSILE STRENGTH | 10000 POUNDS PER SQUARE INCH |
| NOMINAL THREAD SIZE | 0.438 INCHES |
| SHANK DIAMETER | 0.4360 INCHES MINIMUM AND 0.4380 INCHES MAXIMUM |
| SHANK STYLE | PIN-RIVET, STRAIGHT, THREADED |
| SHEAR STRENGTH | 26600 DOUBLE POUNDS PER SQUARE INCH |
| WIDTH BETWEEN FLATS | 0.1695 INCHES MINIMUM AND 0.1830 INCHES MAXIMUM |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL JOINT FINE (UNJF) |