Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 21922 ASSY B81-1040-05-LSK found under Valve Globe by Conbraco Industries Inc. The National Stock Number assigned to this part is 4820012218846, and the Federal Supply Class is 4820 Valves Nonpowered. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 21922 ASSY B81-1040-05-LSK.