| COUNTERSINK ANGLE | 98.30 DEGREES MINIMUM AND 101.30 DEGREES MAXIMUM |
| EXPANSION DEVICE | SERRATED STEM-TYPE W |
| FASTENER LENGTH | 0.316 INCHES MINIMUM AND 0.336 INCHES MAXIMUM |
| GRIP LENGTH | 0.073 INCHES MINIMUM AND 0.125 INCHES MAXIMUM |
| HEAD STYLE | FLUSH (FLAT) COUNTERSUNK (INCLUDED ANGLE - LESS THAN 135 DEG W OR W/O CHAMFER) |
| HEAD MAJOR DIAMETER | 0.349 INCHES MINIMUM AND 0.357 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-N-281 FED SPEC ALL MATERIAL RESPONSES BODY |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-W-390 FED SPEC SINGLE MATERIAL RESPONSE STEM |
| MATERIAL | NICKEL ALLOY 400 OR NICKEL ALLOY R-405 BODY |
| MATERIAL | NICKEL ALLOY 600 STEM |
| SHANK DIAMETER | 0.2005 INCHES MINIMUM AND 0.2045 INCHES MAXIMUM |
| SHANK STYLE | SELF-PLUGGING MECHANICALLY LOCKED STEM |