| DISTANCE FROM CENTERLINE TO INSIDE OF PREBENT KEY | 0.359 INCHES NOMINAL |
| DISTANCE FROM CENTERLINE TO TOP OF INTERNAL KEY | 0.196 INCHES NOMINAL |
| EXTERNAL PREBENT KEY LENGTH | 0.050 INCHES NOMINAL |
| EXTERNAL PREBENT KEY WIDTH | 0.110 INCHES NOMINAL |
| HOLE DIAMETER | 0.475 INCHES NOMINAL |
| INTERNAL STRAIGHT KEY WIDTH | 0.059 INCHES MINIMUM AND 0.065 INCHES MAXIMUM |
| MATERIAL THICKNESS | 0.037 INCHES MINIMUM AND 0.043 INCHES MAXIMUM |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | NAVY SPECIAL PROJECT |
| OVERALL DISTANCE INCLUDING KEYS | 0.751 INCHES NOMINAL |
| STYLE DESIGNATOR | KEY |
| SURFACE FINISH | 125.0 MICROINCHES ALL SURFACES |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM OVERALL |