Jb Industries mr-503 Handwheel Screws Pack of 2

Product Description

The JB INDUSTRIES mr-503 is a replacement handwheel screw set for JB manifold gauge sets. Each package contains two screws designed to restore proper handwheel function on worn or damaged manifolds. Handwheel screws secure the valve handle assembly to the manifold body, allowing technicians to open and close refrigerant ports with consistent torque feel and positive shutoff. This hardware is a direct OEM-style replacement intended for HVAC and refrigeration technicians who service manifold gauge sets in the field or shop.

This screw set is suited for use during routine manifold maintenance or when a handwheel becomes loose, stripped, or non-functional. Keeping spare hardware on hand reduces downtime during refrigerant recovery, evacuation, and charging operations. The two-piece pack provides enough hardware to service both the high-side and low-side handwheels in a single job.

Key Features

• Replacement handwheel screws restore proper valve handle function on JB manifold gauge sets
• Pack of 2 screws covers both high-side and low-side handwheel replacement in one purchase
• OEM-style fit eliminates the need to source generic hardware that may not seat correctly
• Compact consumable hardware suitable for field tool kits and shop inventory

Compatibility

Compatible with all JB manifold gauge set models per manufacturer specification.

Installation Notes

Installation should be performed by a qualified HVAC or refrigeration technician. Before replacing handwheel screws, recover any system refrigerant and depressurize the manifold per standard safe-handling procedures. Use the appropriate hand tools and do not overtighten, as overtorquing small manifold hardware can strip threads or crack the handwheel body. Follow applicable EPA Section 608 guidelines when working with refrigerant-side components.

Technical Specifications

• Package Quantity: 2 screws
• Application: Manifold gauge set handwheel replacement

Standard Information

• Brand: JB INDUSTRIES
• Manufacturer Part Number: mr-503