These nuts are precision cut with little play to deal with dirt, rust and dirt. After cleaning and lubricating the threads of the studs, these nuts worked very well. If you feel they don't match/do not match your cleats, give the cleats a thorough cleaning. The plating is very nice and the cone is in the center of the hole. 845" bolt holes and 60 degree taper) installed on: 80's Dodge 3/4 ton 4x4 (1/2-20 pitch)