| COUNTERSINK ANGLE | 98.5 DEGREES MINIMUM AND 101.5 DEGREES MAXIMUM |
| EXPANSION DEVICE | SERRATED STEM-TYPE W |
| FASTENER LENGTH | 0.630 INCHES MINIMUM AND 0.650 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 | 0.225 INCHES MINIMUM AND 0.229 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-N-281 FED SPEC ALL MATERIAL RESPONSES LOCKING RING |
| MATERIAL | NICKEL ALLOY 400 OR NICKEL ALLOY R-405 LOCKING RING |
| SHANK DIAMETER | 0.139 INCHES MINIMUM AND 0.143 INCHES MAXIMUM |
| SHANK STYLE | SELF-PLUGGING MECHANICALLY LOCKED STEM |
| SHEAR STRENGTH | 895 SINGLE POUNDS PER SQUARE INCH |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE BODY |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE STEM |
| SURFACE TREATMENT | CADMIUM AND CHROMATE BODY |
| SURFACE TREATMENT | CADMIUM AND CHROMATE STEM |