| DISTANCE FROM CENTERLINE TO TOP OF INTERNAL KEY | 0.265 INCHES MINIMUM AND 0.270 INCHES MAXIMUM |
| HOLE DIAMETER | 0.318 INCHES MINIMUM AND 0.328 INCHES MAXIMUM |
| INTERNAL KEY QUANTITY | 1 |
| INTERNAL STRAIGHT KEY WIDTH | 0.047 INCHES MINIMUM AND 0.057 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5350 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL THICKNESS | 0.065 INCHES MINIMUM AND 0.075 INCHES MAXIMUM |
| MATERIAL | STEEL COMP 410 OVERALL |
| OUTSIDE DIAMETER | 0.500 INCHES MINIMUM AND 0.520 INCHES MAXIMUM |
| SPECIAL FEATURES | 42 SERRATIONS EQUALLY SPACED AROUND ENTIRE FACE OF WASHER |
| SPECIFICATION/STANDARD DATA | 80205-NAS1193 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| STYLE DESIGNATOR | KEY |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 TYPE 2 CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM AND CHROMATE OVERALL |