| COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| EXPANSION DEVICE | SERRATED STEM-TYPE W |
| FASTENER LENGTH | 0.635 INCHES MAXIMUM |
| GRIP LENGTH | 0.367 INCHES MINIMUM AND 0.437 INCHES MAXIMUM |
| HEAD STYLE | FLUSH (FLAT) COUNTERSUNK (INCLUDED ANGLE - LESS THAN 135 DEG W OR W/O CHAMFER) |
| HEAD MAJOR DIAMETER | 0.472 INCHES MINIMUM AND 0.480 INCHES MAXIMUM |
| HEAT TREATMENT | H-38 STRAIN HARDENED LOCKING RING |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-430 FED SPEC SINGLE MATERIAL RESPONSE LOCKING RING |
| MATERIAL | ALUMINUM ALLOY 5056 LOCKING RING |
| SHANK DIAMETER | 0.249 INCHES MINIMUM AND 0.253 INCHES MAXIMUM |
| SHANK STYLE | SELF-PLUGGING MECHANICALLY LOCKED STEM |
| SHEAR STRENGTH | 1920 SINGLE POUNDS PER SQUARE INCH |
| SPECIFICATION/STANDARD DATA | 80205-NAS1399 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-A-8625 MIL SPEC 1ST TREATMENT RESPONSE OR MIL--C-5541 MIL SPEC 2ND TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | ANODIZE OR CHROMATE OVERALL |