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The ARP 5/16-18 stainless steel 12-point nut kit is a hardware kit of 12-point nuts sized for 5/16-18 fasteners. Supplied as a specialty nut kit, it provides the 12-point seating profile needed where those fasteners are specified. This kit is intended for use during engine or machinery assembly when 5/16-18 12‑point nuts are required and a stainless finish is preferred for corrosion resistance.
ARP 5/16-18 SS 12pt Nut Kit
