Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 3700-1017 found under Switch Rotary by Helle Engineering Inc. The National Stock Number assigned to this part is 5930009614688, 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 3700-1017.