Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 21L4-100 found under Motor Alternating C by Ellis And Watts International Llc. The National Stock Number assigned to this part is 6105010707600, and the Federal Supply Class is 6105 Motors Electrical. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 21L4-100.