Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number ES364B-524C found under Nut Self Locking Ex by Skurka Aerospace Inc. The National Stock Number assigned to this part is 5310015423564, and the Federal Supply Class is 5310 Nuts And Washers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like ES364B-524C.