Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 3171739 found under Transformer Electri by Honeywell Aerospace. The National Stock Number assigned to this part is 5950004557730, 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 3171739.