Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 820A1C1E2L2M1N1(R found under Switch Push by Cassidian Limited. The National Stock Number assigned to this part is 5930015097884, 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 820A1C1E2L2M1N1(R.