Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 8618 PIECE 33 found under Body Valve by Tyco Valves And Controls Lp. The National Stock Number assigned to this part is 4820011916589, 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 8618 PIECE 33.