Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number P73-11 found under Parts Kit Pressure by Hardigg Industries Inc. The National Stock Number assigned to this part is 4810014350861, and the Federal Supply Class is 4810 Valves Powered. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like P73-11.