Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number QB10-2M10A2 found under Valve Safety Relief by Vickers Inc. The National Stock Number assigned to this part is 4820000054913, 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 QB10-2M10A2.