Curb Hoppers0My CartARP (Automotive Racing Products)Nut - 1/2-13 in Thread - 9/16 in 12 Point Head - Stainless - Black Oxide - Universal - PairListing ID: 917892UPC: 672036037215Manufacturer Part Number: 301-8322Reference Part Number(s): ARP301-8322In Stock, 3 AvailableWill Ship Within 3 Days$12.36Brand NewCopyright (C) 2019-2023 Initial Holdings LLC dba Curb Hoppers. All Rights Reserved.