Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 28D03 found under Adapter Air Inlet H by Grimes Aerospace Company. The National Stock Number assigned to this part is 1660008283104, and the Federal Supply Class is 1660 Aircraft Air Conditioning Heating And Pressurizing Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 28D03.