Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number L20-12A4 found under Switch Code Indicating Wheel by Cherry Electrical. The National Stock Number assigned to this part is 5930005481502, 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 L20-12A4.