Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 518947-55 found under Rod Threaded End by Hadco Engineering Inc. The National Stock Number assigned to this part is 5306012716834, and the Federal Supply Class is 5306 Bolts. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 518947-55.