Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 3170359-4 found under Adapter Regulator by Honeywell Aerospace. The National Stock Number assigned to this part is 2995011949711, and the Federal Supply Class is 2995 Miscellaneous Engine Accessories Aircraft. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 3170359-4.