Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 8B8-5S17-17000000A IT 14 found under Piston Valve by Cashco Inc. The National Stock Number assigned to this part is 4820014439235, 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 8B8-5S17-17000000A IT 14.