Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number BRS 5027 found under Washer Flat by Helopak Inc. The National Stock Number assigned to this part is 5310016264392, 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 BRS 5027.