Thread Size: 3.75-16
Threads per Inch: 16
Nominal Thickness - Inch: 0.813
Nominal Thickness - Millimeter: 20.65
Inch - Metric: Inch

Outside Diameter - Inch: 5.25
Other Features: Self Locking
Outside Diameter - Millimeter: 133.35

Thread Size: 3.75-16
Threads per Inch: 16
Nominal Thickness - Inch: 0.76
Nominal Thickness - Millimeter: 19.304
Inch - Metric: Inch

Outside Diameter - Inch: 5.25
Outside Diameter - Millimeter: 133.35