Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number E83-30 found under Diaphram by Martin Decker Totco Inc. The National Stock Number assigned to this part is 6620001908109, and the Federal Supply Class is 6620 Engine Instruments. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like E83-30.