Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 321-30671-01 found under Diaphragm Pressure Switch by Shimadzu Scientific Instruments Inc. The National Stock Number assigned to this part is 5930014525220, and the Federal Supply Class is 5930 Switches. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 321-30671-01.