Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 13 16221 found under Washer Saddle by Brunswick Corporation. The National Stock Number assigned to this part is 5310015351442, 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 13 16221.