| DISTANCE FROM CENTERLINE TO INSIDE OF PREBENT KEY | 0.406 INCHES MINIMUM AND 0.416 INCHES MAXIMUM |
| DISTANCE FROM CENTERLINE TO TOP OF INTERNAL KEY | 0.156 INCHES MINIMUM AND 0.160 INCHES MAXIMUM |
| EXTERNAL PREBENT KEY LENGTH | 0.086 INCHES MINIMUM AND 0.092 INCHES MAXIMUM |
| EXTERNAL PREBENT KEY WIDTH | 0.117 INCHES MINIMUM AND 0.123 INCHES MAXIMUM |
| HEAT TREATMENT | HOT ROLLED OR COLD DRAWN 1/2 HARD CONDITION |
| HOLE DIAMETER | 0.375 INCHES MINIMUM AND 0.379 INCHES MAXIMUM |
| INTERNAL STRAIGHT KEY WIDTH | 0.059 INCHES MINIMUM AND 0.061 INCHES MAXIMUM |
| MATERIAL THICKNESS | 0.026 INCHES MINIMUM AND 0.036 INCHES MAXIMUM |
| OUTSIDE DIAMETER | 0.615 INCHES MINIMUM AND 0.635 INCHES MAXIMUM |
| OVERALL DISTANCE INCLUDING KEYS | 0.749 INCHES MINIMUM AND 0.759 INCHES MAXIMUM |
| STYLE DESIGNATOR | KEY |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM OVERALL |