Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 54052 found under Spindle Assembly Valve by Tyco Valves And Controls Lp. The National Stock Number assigned to this part is 4820010319253, 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 54052.