Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 3100-0054 found under Switch Rotary by Hewlett Packard Co. The National Stock Number assigned to this part is 5930007548508, 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 3100-0054.