| DISTANCE FROM CENTERLINE TO INSIDE OF PREBENT KEY | 0.443 INCHES NOMINAL |
| DISTANCE FROM CENTERLINE TO TOP OF INTERNAL KEY | 0.193 INCHES NOMINAL |
| EXTERNAL PREBENT KEY LENGTH | 0.281 INCHES NOMINAL |
| EXTERNAL PREBENT KEY WIDTH | 0.281 INCHES NOMINAL |
| HARDNESS RATING | 27.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MAXIMUM |
| HEAT TREATMENT | AS FABRICATED |
| HOLE DIAMETER | 0.510 INCHES NOMINAL |
| INTERNAL STRAIGHT KEY WIDTH | 0.094 INCHES NOMINAL |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL THICKNESS | 0.067 INCHES NOMINAL |
| MATERIAL | STEEL COMP 4130 OVERALL |
| OUTSIDE DIAMETER | 0.883 INCHES NOMINAL |
| OVERALL DISTANCE INCLUDING KEYS | 1.120 INCHES NOMINAL |
| STYLE DESIGNATOR | KEY |