| EXTERNAL KEY QUANTITY | 19 |
| EXTERNAL PREBENT KEY WIDTH | 0.298 INCHES MINIMUM AND 0.328 INCHES MAXIMUM |
| HARDNESS RATING | 50.0 BRINELL MINIMUM AND 81.0 BRINELL MAXIMUM |
| HEAT TREATMENT | ANNEALED |
| HOLE DIAMETER | 3.988 INCHES MINIMUM AND 4.018 INCHES MAXIMUM |
| INTERNAL PREBENT KEY LENGTH | 0.250 INCHES MINIMUM AND 0.312 INCHES MAXIMUM |
| INTERNAL PREBENT KEY WIDTH | 0.313 INCHES MINIMUM AND 0.353 INCHES MAXIMUM |
| MATERIAL THICKNESS | 0.088 INCHES MINIMUM AND 0.100 INCHES MAXIMUM |
| NONDEFINITIVE SPEC/STD DATA | 1 TYPE AND 1 CLASS |
| OUTSIDE DIAMETER | 4.812 INCHES MINIMUM AND 4.857 INCHES MAXIMUM |
| OVERALL DISTANCE INCLUDING KEYS | 5.500 INCHES MAXIMUM |
| STYLE DESIGNATOR | KEY |