Williams Comfort Products JHW3542M 42MM Service Wrench

Product Description

The WILLIAMS COMFORT PRODUCTS JHW3542M is an ultra-thin pattern open-end service wrench designed for professional use in confined spaces and on jam nuts where standard wrenches cannot reach. It features a 42 MM opening and an overall length of approximately 7.625 inches. The head is offset at 30 degrees to improve access in tight quarters. The satin-chrome finish resists corrosion and reduces glare in work environments. This wrench is built to Federal Specification GGG-W-636E Type 17-Class 3, confirming it meets standardized dimensional and performance requirements for professional-grade hand tools.

This wrench is suited for plumbing, HVAC, and general mechanical service applications where jam nuts or recessed fasteners limit access. The ultra-thin profile allows engagement in areas where conventional spanners or box wrenches cannot fit. It is appropriate for use in residential and light commercial settings by licensed plumbers, HVAC technicians, and mechanical contractors working on equipment requiring precise fastener control in restricted spaces.

Key Features

• 42 MM jaw opening for a precise, slip-resistant fit on metric fasteners
• Ultra-thin pattern designed specifically for jam nuts and confined-area access
• 30-degree offset head improves clearance and torque angle in tight installations
• Satin-chrome finish provides corrosion resistance and reduced glare
• Meets Federal Specification GGG-W-636E Type 17-Class 3
• Compact profile at approximately 0.3 inches thick for access in restricted spaces

Compatibility

Designed as an OEM-style service wrench for use with 42 MM fasteners and jam nuts in plumbing, HVAC, and mechanical service applications where ultra-thin clearance is required.

Installation Notes

This wrench is intended for use by qualified trade professionals including licensed plumbers and HVAC technicians. Always ensure the fastener or nut is fully engaged in the jaw before applying torque to prevent slipping. Verify the workpiece and surrounding components are properly supported before use. Follow all applicable local codes and manufacturer service procedures when working on pressurized or energized systems.

Technical Specifications

• Jaw Opening: 42 MM
• Overall Length: 7.625 inches
• Head Offset Angle: 30 degrees
• Finish: Satin-Chrome
• Thickness: 0.3 inches
• Width: 8 inches
• Weight: 0.45 pounds
• Federal Specification: GGG-W-636E Type 17-Class 3
• Unit of Measure: Each

Standard Information

• Brand: WILLIAMS COMFORT PRODUCTS
• Manufacturer Part Number: JHW3542M