Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number WP1487 found under Washer Special by Associated Spring Barnes Group Inc. The National Stock Number assigned to this part is 5310001260017, 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 WP1487.