Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number AV57-461-30B1 found under Gasket by Automatic Switch Company. The National Stock Number assigned to this part is 5330007152019, and the Federal Supply Class is 5330 Packing And Gasket Materials. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like AV57-461-30B1.