Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 4000236 found under Air Duct Section De by Hdt Expeditionary Systems Inc. The National Stock Number assigned to this part is 2590015353743, and the Federal Supply Class is 2590 Miscellaneous Vehicular Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 4000236.