| COUNTERSINK ANGLE | 148.0 DEGREES MINIMUM AND 152.0 DEGREES MAXIMUM |
| FASTENER LENGTH | 0.615 INCHES MINIMUM AND 0.635 INCHES MAXIMUM |
| HEAD STYLE | FLUSH (FLAT) COUNTERSUNK (INCLUDED ANGLE - LESS THAN 135 DEG W OR W/O CHAMFER) |
| HEAD MAJOR DIAMETER | 0.354 INCHES MINIMUM AND 0.364 INCHES MAXIMUM |
| HOLE DEPTH | 0.151 INCHES MINIMUM AND 0.161 INCHES MAXIMUM |
| HOLE DIAMETER | 0.099 INCHES NOMINAL |
| MATERIAL | COPPER ALLOY OVERALL |
| NONDEFINITIVE SPEC/STD DATA | 12 TYPE AND B CLASS |
| SHANK DIAMETER | 0.140 INCHES MINIMUM AND 0.148 INCHES MAXIMUM |
| SHANK STYLE | TUBULAR |