Proto J3112 Open End Wrench 3/8 Inch Double End

Product Description

The PROTO J3112 is a double-ended open end wrench sized at 3/8 inch, manufactured from chrome-plated steel for corrosion resistance and long service life. The wrench features a 15-degree and 60-degree head angle on opposing ends, giving technicians access to fasteners in tight or offset positions where a standard flat approach will not reach. Weighing 0.06 pounds, the J3112 is a lightweight hand tool suited for mechanical, HVAC, plumbing, and electrical trade work where a reliable open end wrench is part of the standard toolkit. It meets GGG-W-636E federal specification standards and carries a lifetime warranty.

The PROTO J3112 is well suited for residential and light commercial service work. The dual-angle head design makes it practical for confined equipment compartments, panel access areas, and tight mechanical assemblies. HVAC technicians, plumbers, pipefitters, and general mechanical tradespeople will find the 3/8-inch size appropriate for common fastener sizes encountered on equipment connections, access panels, and piping assemblies. The chrome finish resists corrosion in wet or humid work environments common to mechanical service work.

Key Features

• Double-ended open end head with 15-degree and 60-degree offset angles for improved fastener access in confined spaces
• 3/8-inch wrench size fits common fasteners found in HVAC, plumbing, and mechanical applications
• Chrome-plated steel construction provides corrosion resistance and durability
• Meets GGG-W-636E federal specification standard
• Lifetime warranty from PROTO
• Lightweight at 0.06 pounds for extended overhead or confined-space use

Compatibility

Designed as a standard 3/8-inch double-ended open end wrench for general mechanical, HVAC, plumbing, and electrical trade use wherever a GGG-W-636E-compliant hand tool is specified.

Installation Notes

This wrench is a hand tool installed and used by licensed tradespeople across mechanical, HVAC, plumbing, and electrical disciplines. Always select the correct jaw size before applying torque to avoid rounding fastener flats. When working on energized electrical panels or live gas lines, follow applicable NEC, IFGC, or IPC lockout and shutoff procedures before using any hand tool on fasteners. Inspect the chrome finish and jaw opening for wear or damage before each use.