MRC:
The length of a straight line which passes through the center of a hole,and terminates at the circumference.AAUB
Hole Diameter:
Between 2.780 inches and 2.800 inches
MRC:
The length of a straight line which passes through the center of a circular figure or body,and terminates at the outside circumference.ABKV
Outside Diameter:
Between 3.387 inches and 3.407 inches
External Straight Key Width:
Between 0.150 inches and 0.170 inches
Tapered Key Minor Width:
Between 1.190 inches and 1.200 inches
MRC:
The measurement from one flat surface of the key to the opposite flat surface.ABLJ
Internal Straight Key Width:
0.295 inches
