Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 874-090 found under Valve Special by Bae Systems Land And Armaments L P. The National Stock Number assigned to this part is 4820013482881, 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 874-090.