| FASTENER LENGTH | 1.303 INCHES NOMINAL |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5644 ASSN STD SINGLE MATERIAL RESPONSE OR |
| ASTM A580 ASSN STD SINGLE MATERIAL RESPONSE SPRING |
| MIL-S-6049 MIL SPEC SINGLE MATERIAL RESPONSE FASTENER |
| SURFACE TREATMENT | CADMIUM AND |
| CHROMATE FASTENER |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE SPRING |
| QQ-P-416 TY 2 CL 2 FED SPEC SINGLE TREATMENT RESPONSE FASTENER |
| HARDNESS RATING | 50.0 ROCKWELL C MINIMUM AND |
| 58.0 ROCKWELL C MAXIMUM LOCKING FEATURE |
| 39.0 ROCKWELL C MINIMUM AND |
| 45.0 ROCKWELL C MAXIMUM FASTENER |
| HEAD DIAMETER | 0.449 INCHES MINIMUM AND |
| 0.507 INCHES MAXIMUM |
| COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND |
| 101.0 DEGREES MAXIMUM |
| DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 1.198 INCHES MINIMUM AND |
| 1.218 INCHES MAXIMUM FIRST HOLE |
| SHANK UNTHREADED HOLE DIAMETER | 0.076 INCHES MINIMUM AND |
| 0.086 INCHES MAXIMUM FIRST HOLE |
| SPECIAL FEATURES | SPINDLE PASSIVATE PER QQ-P-35; 180000 PSI; MATERIAL CRES AMS 5643 17-4PH OR ALLOY STEEL PER MIL-S-6049 |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | NAVY SPECIAL PROJECT |