Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 3F31-12950 found under Coil Electrical by Monitor Controller Co. The National Stock Number assigned to this part is 5950006455781, 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 3F31-12950.