Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number AN12H31A found under Screw Cap Hexagon H by Aeronautical Standards Group. The National Stock Number assigned to this part is 5305013307086, and the Federal Supply Class is 5305 Screws. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like AN12H31A.