Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number B70-85-4249 found under Washer Spring Tensi by Gits Mfg Co Inc. The National Stock Number assigned to this part is 5310010196367, 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 B70-85-4249.