Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number D137 B80 R60 found under Washer Spring Tensi by Eads Deutschland Gmbh. The National Stock Number assigned to this part is 5310121537173, 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 D137 B80 R60.