Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 83D4010 ITEM 20 found under Transformer Power by Engineered Coil Company. The National Stock Number assigned to this part is 5950012259381, 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 83D4010 ITEM 20.