The ARP studs’ knurled section is a little too fat to install with a hammer and brass punch. The options were to drill out the holes in the hub flange, pull the hub out of the steering knuckle, and take it somewhere to get the studs pressed in, or to carefully shave down the knurled section. We went for option three. By chucking the stud into a drill press as shown and holding a file against the rotating knurled section, we removed just enough material to allow installation with a hammer and a brass punch. We took our time and fit-checked the knurled section in the hub several times. Go slowly; the idea is to sneak up on the final dimension.