Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number AS21926JB found under Elbow Tube by Federal Commercial Item Description. The National Stock Number assigned to this part is 4730009787953, and the Federal Supply Class is 4730 Hose Pipe Tube Lubrication And Railing Fittings. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like AS21926JB.