Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 021871-000 found under Washer Spring Tensi by Saft America Inc. The National Stock Number assigned to this part is 5310015140394, 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 021871-000.