Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 5Z973 found under Valve Weighted Control Piston by Link Belt Construction Equipment. The National Stock Number assigned to this part is 4820006031215, 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 5Z973.