Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number S84-11-E1 found under Transformer Power by Drs Sustainment Systems Inc. The National Stock Number assigned to this part is 5950012936479, and the Federal Supply Class is 5950 Coils And Transformers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like S84-11-E1.