| MATERIAL | IRON ALLOY 660 OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5731 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| MINIMUM TENSILE STRENGTH | 2000 POUNDS PER SQUARE INCH |
| SHEAR STRENGTH | 5380 DOUBLE POUNDS PER SQUARE INCH |
| HEAD STYLE | CROWN COUTERSUNK GREATER THAN 135 DEGREES |
| HEAD MAJOR DIAMETER | 0.2966 INCHES MINIMUM AND |
| 0.3016 INCHES MAXIMUM |
| COUNTERSINK ANGLE | 100.0 DEGREES NOMINAL |
| SHANK STYLE | PIN-RIVET, STRAIGHT, THREADED |
| FASTENER LENGTH | 1.900 INCHES MINIMUM AND |
| 1.920 INCHES MAXIMUM |
| WIDTH BETWEEN FLATS | 0.104 INCHES MINIMUM AND |
| 0.119 INCHES MAXIMUM |
| SHANK DIAMETER | 0.1890 INCHES MINIMUM AND |
| 0.1895 INCHES MAXIMUM |
| GRIP LENGTH | 1.500 INCHES NOMINAL |
| THREAD SERIES DESIGNATOR | UNJF |
| NOMINAL THREAD SIZE | 0.190 INCHES |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| LUBRICATION | CETYL ALCOHOL |
| SPECIAL FEATURES | GROOVE LOCATED BETWEEN SHANK AND THREADS 0.130 INCH WIDE |