| COLLAR STYLE | THREADED BREAK OFF TYPE |
| COLLAR INSIDE DIAMETER | 0.314 INCHES MINIMUM AND 0.325 INCHES MAXIMUM |
| COLLAR OUTSIDE DIAMETER | 0.512 INCHES MINIMUM AND 0.518 INCHES MAXIMUM |
| COLLAR OVERALL HEIGHT | 0.652 INCHES MINIMUM AND 0.672 INCHES MAXIMUM |
| COUNTERSINK ANGLE | 90.0 DEGREES MINIMUM AND 100.0 DEGREES MAXIMUM |
| FASTENER LENGTH | 1.000 INCHES NOMINAL |
| GRIP LENGTH | 0.500 INCHES NOMINAL |
| HEAD HEIGHT | 0.098 INCHES MINIMUM AND 0.112 INCHES MAXIMUM |
| HEAD MAJOR DIAMETER | 0.472 INCHES MINIMUM AND 0.502 INCHES MAXIMUM |
| HEAD STYLE | COUNTERSUNK W/REVERSE CHAMFER |
| 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 | 0.312 INCHES |
| SHANK DIAMETER | 0.3110 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM |
| SHANK STYLE | PIN-RIVET, STRAIGHT, THREADED |
| SPECIAL FEATURES | SUPLLIED W/COLLAR |
| WIDTH BETWEEN FLATS | 0.160 INCHES MINIMUM AND 0.180 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 | 24 |