Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 90K10A1C2D1F3G2J1WL1N1R121N found under Switch by Eaton Aerospace Ltd. The National Stock Number assigned to this part is 5930001945919, 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 90K10A1C2D1F3G2J1WL1N1R121N.