Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number B2770-1008 found under Valve Ball by Macleod Inc. The National Stock Number assigned to this part is 4820010987881, 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 B2770-1008.