Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 23C28004 ITEM 37 found under Disc Plenum Support by Air Cruisers Company Llc. The National Stock Number assigned to this part is 4910013793568, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 23C28004 ITEM 37.