| DISTANCE FROM CENTERLINE TO INSIDE OF PREBENT KEY | 0.470 INCHES MINIMUM AND 0.480 INCHES MAXIMUM |
| EXTERNAL PREBENT KEY LENGTH | 0.120 INCHES MINIMUM AND 0.200 INCHES MAXIMUM |
| EXTERNAL PREBENT KEY WIDTH | 0.370 INCHES MINIMUM AND 0.430 INCHES MAXIMUM |
| HARDNESS RATING | 38.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM |
| HEAT TREATMENT | AS FABRICATED |
| HOLE DIAMETER | 0.514 INCHES MINIMUM AND 0.523 INCHES MAXIMUM |
| OVERALL WIDTH | 1.220 INCHES MINIMUM AND 1.250 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-25043 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL THICKNESS | 0.080 INCHES MINIMUM AND 0.100 INCHES MAXIMUM |
| MATERIAL | STEEL OVERALL |
| OVERALL DISTANCE INCLUDING KEYS | 1.000 INCHES MINIMUM AND 1.030 INCHES MAXIMUM |
| STYLE DESIGNATOR | KEY |
| SURFACE TREATMENT | PASSIVATE OVERALL |