Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 2642-859-01 ITEM 29 27 found under Parts Kit Ball Valve by Joint Oil Analysis Program. The National Stock Number assigned to this part is 4820010698659, 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 2642-859-01 ITEM 29 27.