These high strength studs can be used to replace factory studs. You can use 2 nuts on them. One to secure the stud in place, and a second to tighten a bracket. These also make great carb mount studs. This stud has a 5/16-18 thread on one end and a 5/16-24 thread on the other end.
ARP grade 8 stainless bolts, studs, and nuts are virtually impervious to rust and corrosion. Rated at 170,000 psi makes these stronger than regular grade 8 fasteners. These are maintenance free fasteners and come with a polished finish.