Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 2B91-1-A found under Transformer Current by Honeywell Aerospace. The National Stock Number assigned to this part is 5950004020056, 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 2B91-1-A.