Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 21C912-113 found under Transformer Power by Noel Smyser Engineering Corp. The National Stock Number assigned to this part is 5950003599658, 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 21C912-113.