| FASTENER LENGTH | 0.719 INCHES MAXIMUM |
| HEAD STYLE | FLUSH (FLAT) COUNTERSUNK (INCLUDED ANGLE - LESS THAN 135 DEG W OR W/O CHAMFER) |
| SHANK DIAMETER | 0.139 INCHES MINIMUM AND 0.143 INCHES MAXIMUM |
| SHANK STYLE | SELF-PLUGGING MECHANICALLY LOCKED STEM |
| HEAD MAJOR DIAMETER | 0.229 INCHES MAXIMUM |
| EXPANSION DEVICE | SERRATED STEM-TYPE W |
| GRIP LENGTH | 0.501 INCHES MINIMUM AND 0.562 INCHES MAXIMUM |
| COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| MATERIAL | NICKEL ALLOY 400 OR NICKEL ALLOY R-405 LOCKING RING |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-N-281 FED SPEC ALL MATERIAL RESPONSES LOCKING RING |