Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 320504 found under Motor Windshield Wiper Electric by Hein Werner Corp. The National Stock Number assigned to this part is 2540012804366, and the Federal Supply Class is 2540 Vehicular Furniture And Accessories. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 320504.