| MATERIAL | IRON ALLOY 660 OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| HEAT TREATMENT | SOLUTION HEAT TREATED OVERALL |
| SHEAR STRENGTH | 85000 SINGLE POUNDS PER SQUARE INCH |
| HEAD STYLE | FLUSH (FLAT) COUNTERSUNK (INCLUDED ANGLE - LESS THAN 135 DEG W OR W/O CHAMFER) |
| HEAD MAJOR DIAMETER | 0.3654 INCHES MAXIMUM |
| COUNTERSINK ANGLE | 98.5 DEGREES MINIMUM AND |
| 101.5 DEGREES MAXIMUM |
| SHANK STYLE | COUNTERSUNK (UNDRILLED) |
| FASTENER LENGTH | 0.678 INCHES MINIMUM AND |
| 0.698 INCHES MAXIMUM |
| SHANK DIAMETER | 0.186 INCHES MINIMUM AND |
| 0.191 INCHES MAXIMUM |
| SPECIFICATION/STANDARD DATA | 80205-NAS1199 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |