| COUNTERSINK ANGLE | 98.5 DEGREES MINIMUM AND 101.5 DEGREES MAXIMUM | 
| EXPANSION DEVICE | SERRATED STEM-TYPE W | 
| FASTENER LENGTH | 0.638 INCHES MAXIMUM | 
| GRIP LENGTH | 0.438 INCHES MINIMUM AND 0.500 INCHES MAXIMUM | 
| HEAD STYLE | FLUSH (FLAT) COUNTERSUNK (INCLUDED ANGLE - LESS THAN 135 DEG W OR W/O CHAMFER) | 
| HEAD MAJOR DIAMETER | 0.282 INCHES MINIMUM AND 0.290 INCHES MAXIMUM | 
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE SLEEVE | 
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE STEM | 
| MATERIAL | NICKEL ALLOY 400  OR NICKEL ALLOY R-405 SLEEVE | 
| MATERIAL | NICKEL ALLOY 400  OR NICKEL ALLOY R-405 STEM | 
| SHANK DIAMETER | 0.155 INCHES MINIMUM AND 0.159 INCHES MAXIMUM | 
| SHANK STYLE | SELF-PLUGGING MECHANICALLY LOCKED STEM | 
| SPECIFICATION/STANDARD DATA | 80205-NAS1398 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |