| DISTANCE FROM CENTERLINE TO INSIDE OF PREBENT KEY | 0.265 INCHES MINIMUM AND 0.275 INCHES MAXIMUM | 
| ANGLE BETWEEN EXTERNAL KEYS | 58.0 DEGREES MINIMUM AND 62.0 DEGREES MAXIMUM | 
| EXTERNAL KEY QUANTITY | 3 | 
| EXTERNAL PREBENT KEY LENGTH | 0.100 INCHES MINIMUM AND 0.110 INCHES MAXIMUM | 
| EXTERNAL PREBENT KEY WIDTH | 0.100 INCHES MINIMUM AND 0.115 INCHES MAXIMUM | 
| EXTERNAL TAPERED KEY WIDTH | 0.250 INCHES MINIMUM AND 0.260 INCHES MAXIMUM | 
| HOLE DIAMETER | 0.255 INCHES MINIMUM AND 0.260 INCHES MAXIMUM | 
| MATERIAL DOCUMENT AND CLASSIFICATION | BSI 1449 GRADE CSA4BR NATIONAL STD/SPEC SINGLE MATERIAL RESPONSE | 
| MATERIAL THICKNESS | 0.036 INCHES NOMINAL | 
| III MATERIAL | STEEL | 
| OUTSIDE DIAMETER | 0.440 INCHES MINIMUM AND 0.450 INCHES MAXIMUM | 
| OVERALL DISTANCE INCLUDING KEYS | 0.656 INCHES NOMINAL | 
| SPLIT KEY LENGTH | 0.130 INCHES NOMINAL | 
| STYLE DESIGNATOR | KEY |