Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number HB82-A12 found under Valve Check Inline by Eaton Aerospace Ltd. The National Stock Number assigned to this part is 4820012329566, 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 HB82-A12.