Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number O2N2FP0228 5 found under Adapter Compressed Gas Cylinder by Aero Specialties Manufacturing Corp. The National Stock Number assigned to this part is 1660016625266, 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 O2N2FP0228 5.