Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 3100-2605 found under Switch Rotary by Hewlett Packard Co. The National Stock Number assigned to this part is 5930010321877, 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 3100-2605.