| COUNTERSINK ANGLE | 118.0 DEGREES MINIMUM AND 122.0 DEGREES MAXIMUM |
| FASTENER LENGTH | 0.730 INCHES MINIMUM AND 0.750 INCHES MAXIMUM |
| GRIP LENGTH | 0.280 INCHES MINIMUM AND 0.296 INCHES MAXIMUM |
| HARDNESS RATING | 31.0 ROCKWELL C MINIMUM AND 39.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD STYLE | FLUSH COUNTERSUNK |
| HEAD MAJOR DIAMETER | 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS5659 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL CORROSION RESISTING OVERALL |
| NOMINAL THREAD SIZE | 0.164 INCHES |
| SHANK DIAMETER | 0.158 INCHES MINIMUM AND 0.164 INCHES MAXIMUM |
| SHANK STYLE | PIN-RIVET, STRAIGHT, THREADED |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 32 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |
| SPECIAL FEATURES | USED ON 3213790-5/NEXT ASSY 3213791-S/CHAMFERED HEAD HEIGHT INCLUDED IN GRIP LENGTH |
| WIDTH BETWEEN FLATS | 0.078 INCHES MINIMUM AND 0.080 INCHES MAXIMUM |