Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number S-59 PIECE 48 found under Washer Lock by Beach Russ Company. The National Stock Number assigned to this part is 5310005845272, 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 S-59 PIECE 48.