Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number A57-00104 found under Resolver Electrical Linear by Parker Hannifin Ltd. The National Stock Number assigned to this part is 5990001120689, and the Federal Supply Class is 5990 Synchros And Resolvers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like A57-00104.