| DISTANCE FROM CENTERLINE TO INSIDE OF PREBENT KEY | 0.390 INCHES NOMINAL |
| EXTERNAL PREBENT KEY LENGTH | 0.018 INCHES MINIMUM AND 0.028 INCHES MAXIMUM |
| EXTERNAL PREBENT KEY WIDTH | 0.184 INCHES MAXIMUM |
| HOLE DIAMETER | 0.500 INCHES MINIMUM AND 0.503 INCHES MAXIMUM |
| OUTSIDE DIAMETER | 0.745 INCHES MINIMUM AND 0.755 INCHES MAXIMUM |
| OVERALL DISTANCE INCLUDING KEYS | 0.811 INCHES NOMINAL |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-766 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL THICKNESS | 0.025 INCHES MINIMUM AND 0.027 INCHES MAXIMUM |
| MATERIAL | STEEL CORROSION RESISTING OVERALL |
| STYLE DESIGNATOR | KEY |
| SURFACE TREATMENT | OXIDE FILM OVERALL |