| COLLAR STYLE | THREADED BREAK OFF TYPE |
| COLLAR INSIDE DIAMETER | 0.166 INCHES MINIMUM AND 0.173 INCHES MAXIMUM |
| COLLAR OUTSIDE DIAMETER | 0.283 INCHES MINIMUM AND 0.287 INCHES MAXIMUM |
| COLLAR OVERALL HEIGHT | 0.427 INCHES MINIMUM AND 0.447 INCHES MAXIMUM |
| COUNTERSINK ANGLE | 100.0 DEGREES NOMINAL |
| FASTENER LENGTH | 0.500 INCHES NOMINAL |
| GRIP LENGTH | 0.188 INCHES NOMINAL |
| HEAD MAJOR DIAMETER | 0.3256 INCHES MINIMUM AND 0.3304 INCHES MAXIMUM |
| HEAD STYLE | FLUSH COUNTERSUNK |
| LUBRICATION | CETYL ALCOHOL, SPEC 305, HI-SHEAR CORP |
| MATERIAL | STEEL BODY |
| MATERIAL | STEEL CORROSION RESISTING COLLAR |
| MINIMUM TENSILE STRENGTH | 160000 POUNDS PER SQUARE INCH |
| NOMINAL THREAD SIZE | 8.0 MILLIMETERS |
| SHANK DIAMETER | 0.1625 INCHES MINIMUM AND 0.1635 INCHES MAXIMUM |
| SHANK STYLE | PIN-RIVET, STRAIGHT, THREADED |
| SPECIAL FEATURES | SUPPLIED W/COLLAR |
| WIDTH BETWEEN FLATS | 0.104 INCHES MINIMUM AND 0.119 INCHES MAXIMUM |
| SURFACE TREATMENT | CADMIUM COLLAR |
| SURFACE TREATMENT | CADMIUM BODY |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD SERIES DESIGNATOR | UNJF |
| THREAD QUANTITY PER INCH | 32 |