| DISTANCE FROM CENTERLINE TO INSIDE OF PREBENT KEY | 0.310 INCHES MINIMUM AND 0.320 INCHES MAXIMUM |
| EXTERNAL PREBENT KEY LENGTH | 0.122 INCHES MINIMUM AND 0.146 INCHES MAXIMUM |
| EXTERNAL PREBENT KEY WIDTH | 0.065 INCHES MINIMUM AND 0.075 INCHES MAXIMUM |
| HARDNESS RATING | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM |
| HOLE DIAMETER | 0.188 INCHES MINIMUM AND 0.192 INCHES MAXIMUM |
| MATERIAL THICKNESS | 0.014 INCHES MINIMUM AND 0.018 INCHES MAXIMUM |
| MATERIAL | STEEL COMP 410 OVERALL |
| OUTSIDE DIAMETER | 0.406 INCHES MINIMUM AND 0.430 INCHES MAXIMUM |
| OVERALL DISTANCE INCLUDING KEYS | 0.527 INCHES MINIMUM AND 0.553 INCHES MAXIMUM |
| STYLE DESIGNATOR | KEY |