Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 938-018-001 found under Transformer Pulse by Bull Hn Information Systems Inc. The National Stock Number assigned to this part is 5950000941031, 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 938-018-001.