Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number B85-44BZ found under Washer Lock by Sparton Corporation. The National Stock Number assigned to this part is 5310000106498, 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 B85-44BZ.