Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 291-48 found under Cylinder Compressed Gas Air Tech by Applied Companies. The National Stock Number assigned to this part is 8120015106282, and the Federal Supply Class is 8120 Commercial And Industrial Gas Cylinders. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 291-48.