Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 5401-6 found under Switch Pressure by Spectrum Pressurestat Co Inc. The National Stock Number assigned to this part is 5930001624027, 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 5401-6.