Thread Size: M55 X 2
Inch - Metric: Metric
Outside Diameter - Inch: 3.35
Outside Diameter - Millimeter: 85.1
Other Features: Mechanical Lock | M5 Lock Screw

Nominal Thickness - Inch: 0.787
Nominal Thickness - Millimeter: 20

Thread Size: 2.157-18
Inch - Metric: Inch
Outside Diameter - Inch: 3.35
Outside Diameter - Millimeter: 85.09
Other Features: Mechanical Lock | M5 Lock Screw

Threads per Inch: 18
Nominal Thickness - Inch: 0.78
Nominal Thickness - Millimeter: 19.812