These high strength studs can be used to replace factory studs. You can use 2 nuts on them. One to secrure the stud in place, and a second to tighten a bracket. They also work great for mounting your headers to the heads. This stud has a 3/8-16 thread on one end and a 3/8-24 thread on the other. These studs have a unique ball lead to prevent cross threading.
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.