Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number E20017 ITEM 9 found under Switch Rotary by Ian Conrad Bergan Inc. The National Stock Number assigned to this part is 5930013529744, 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 E20017 ITEM 9.