Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SPA22B3580B found under Pump Fuel Metering And Distribut by Hamilton Standard Electronics. The National Stock Number assigned to this part is 2910003509281, and the Federal Supply Class is 2910 Engine Fuel System Components Nonaircraft. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like SPA22B3580B.