
This ARP single nut is specified as a 1/2-20 12-point nut sold individually for use as replacement or spare hardware. Supplied as a single item, it provides a matching 12-point fastening option when a single nut is required during assembly, repair or rebuild tasks in engine and component work where this specific thread and 12-point form are needed.
ARP 1/2in -20 12pt Nut (Single Nut)