Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number BH7501 found under Transformer Power by Howell Instruments Inc. The National Stock Number assigned to this part is 5950009221622, 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 BH7501.