Description Details: Each disc has an outside diameter of .370″, allowing it to fit into a 3/8″ (.375″) counterbore. Overal disc height is .070″ with a .050″ shoulder height. Disc is drilled and counterbored for our supplied titanium .110″ long thread length, 2-56 SHORT socket head screw. The back side of the disc has a .010″ relief cut on the lower 1/3 of the disc, to allow for slight lockbar over travel. This allows additional detent ball clearance.