Ball Joint Rivet Bolt Set. This is a set of 8 rivet style bolts that attach the ball joint to the upper control arm and gives it the appearance of a real rivet, unlike what the other guys are selling, ours has a serrated locking rivet head so it doesn’t spin when you tighten the nut. Comes with eight Grade 8 rivet bolts, eight lock washers and eight nuts. Fits Cutlass / Chevelle / El Camino / Monte Carlo / Camaro / Firebird / Skylark / Impala / Nova / GTO / LeMans and other GM models.