| DISTANCE FROM CENTERLINE TO INSIDE OF PREBENT KEY | 0.422 INCHES NOMINAL |
| DISTANCE FROM CENTERLINE TO TOP OF INTERNAL KEY | 0.156 INCHES NOMINAL |
| EXTERNAL PREBENT KEY LENGTH | 0.034 INCHES NOMINAL |
| EXTERNAL PREBENT KEY WIDTH | 0.093 INCHES NOMINAL |
| HOLE DIAMETER | 0.380 INCHES MINIMUM AND 0.390 INCHES MAXIMUM |
| INTERNAL STRAIGHT KEY WIDTH | 0.050 INCHES NOMINAL |
| OUTSIDE DIAMETER | 0.656 INCHES NOMINAL |
| OVERALL DISTANCE INCLUDING KEYS | 0.839 INCHES NOMINAL |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-B-613 1/2 HARD FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL THICKNESS | 0.032 INCHES NOMINAL |
| MATERIAL | COPPER ALLOY 260 OVERALL |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | NAVY SPECIAL PROJECT |
| STYLE DESIGNATOR | KEY |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM OVERALL |