Parker Needle Valve Panel Mounting Nut, Stainless Steel, Panel Mounting Nut for 4M4Z-V4LK-SS Needle Valve. Technical Specifications: Manufacturer: Parker Hannifin Material: Stainless Steel Used On Item: Needle Valve Used On Item Part No: 4M4Z-V4LK-SS Product Category: Valves Product Type: Panel Nuts Brand/Division: Instrumentation Products