| EXTERNAL KEY QUANTITY | 1 | 
| EXTERNAL STRAIGHT KEY WIDTH | 0.170 INCHES MINIMUM AND 0.185 INCHES MAXIMUM | 
| HARDNESS RATING | 12.0 ROCKWELL C MINIMUM AND 23.0 ROCKWELL C MAXIMUM | 
| HOLE DIAMETER | 1.790 INCHES MINIMUM AND 1.810 INCHES MAXIMUM | 
| MATERIAL DOCUMENT AND CLASSIFICATION | SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL | 
| MATERIAL THICKNESS | 0.077 INCHES MINIMUM AND 0.089 INCHES MAXIMUM | 
| MATERIAL | STEEL COMP 4130 OVERALL | 
| OUTSIDE DIAMETER | 2.090 INCHES MINIMUM AND 2.110 INCHES MAXIMUM | 
| OVERALL DISTANCE INCLUDING KEYS | 2.440 INCHES MINIMUM AND 2.460 INCHES MAXIMUM | 
| STYLE DESIGNATOR | KEY | 
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | 
| SURFACE TREATMENT | CADMIUM  AND CHROMATE OVERALL |