| DISTANCE FROM CENTERLINE TO TOP OF INTERNAL KEY | 0.149 INCHES MINIMUM AND 0.165 INCHES MAXIMUM |
| EXTERNAL KEY QUANTITY | 1 |
| EXTERNAL PREBENT KEY LENGTH | 0.050 INCHES NOMINAL |
| EXTERNAL PREBENT KEY WIDTH | 0.110 INCHES NOMINAL |
| HOLE DIAMETER | 0.250 INCHES NOMINAL |
| INTERNAL KEY QUANTITY | 1 |
| INTERNAL STRAIGHT KEY WIDTH | 0.059 INCHES MINIMUM AND 0.065 INCHES MAXIMUM |
| MATERIAL THICKNESS | 0.037 INCHES MINIMUM AND 0.043 INCHES MAXIMUM |
| MATERIAL | STEEL OVERALL |
| OUTSIDE DIAMETER | 0.452 INCHES MINIMUM AND 0.484 INCHES MAXIMUM |
| OVERALL DISTANCE INCLUDING KEYS | 0.476 INCHES MINIMUM AND 0.492 INCHES MAXIMUM |
| STYLE DESIGNATOR | KEY |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM AND CHROMATE OVERALL |