| FASTENER LENGTH | 1.035 INCHES MINIMUM AND 1.055 INCHES MAXIMUM |
| GRIP LENGTH | 0.495 INCHES MINIMUM AND 0.505 INCHES MAXIMUM |
| HEAD HEIGHT | 0.076 INCHES MINIMUM AND 0.086 INCHES MAXIMUM |
| HEAD MAJOR DIAMETER | 0.545 INCHES MINIMUM AND 0.600 INCHES MAXIMUM |
| LUBRICATION | SOLID FILM |
| 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 | 8700 POUNDS PER SQUARE INCH |
| NOMINAL THREAD SIZE | 0.375 INCHES |
| SHANK DIAMETER | 0.3735 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM |
| SHANK STYLE | PIN-RIVET, STRAIGHT, THREADED |
| SHEAR STRENGTH | 21000 DOUBLE POUNDS PER SQUARE INCH |
| WIDTH BETWEEN FLATS | 0.1582 INCHES MINIMUM AND 0.1617 INCHES MAXIMUM |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL JOINT FINE (UNJF) |