Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 5517558-047 found under Stud Continuous Thread by North American Bolt And Screw Co Inc. The National Stock Number assigned to this part is 5307012021691, and the Federal Supply Class is 5307 Studs. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 5517558-047.