Proto J12112 Combination Wrench 3-1/2 Inch 37 Inch Oal

Product Description

The PROTO J12112 is a heavy-duty combination wrench built for industrial and mechanical applications where a large fastener drive is required. It features a 3-1/2 inch head size with a 15-degree offset on the box end, a straight handle, and an overall length of 37 inches. Constructed from steel with a corrosion-resistant finish, this wrench meets ASME B107.100-2010 standards. The 12-point box end provides multiple contact positions on hex fasteners, reducing the chance of rounding. It is tether capable, making it suitable for use in elevated work environments where dropped-tool prevention is required. Licensed mechanics, millwrights, pipefitters, and industrial maintenance technicians are the primary users of this tool.

The J12112 is designed for large-fastener work found in heavy equipment, structural assemblies, pipework, and industrial machinery. The 37-inch overall length provides the leverage needed to break loose or torque large fasteners without supplemental extensions. The tether-capable design meets dropped-object prevention requirements on job sites such as refineries, elevated platforms, and confined-space work areas where tool retention is mandated by safety protocol. The 15-degree offset on the box end allows clearance over obstructions around fastener heads in tight or recessed locations.

Key Features

• 3-1/2 inch head size for large industrial fastener applications
• 15-degree offset box end provides clearance in obstructed fastener locations
• 37 inch overall length delivers high torque leverage without extensions
• 12-point box end engages fasteners at multiple contact positions
• Tether capable design supports dropped-object prevention requirements
• Corrosion-resistant steel construction rated to ASME B107.100-2010
• Limited lifetime warranty from manufacturer

Compatibility

Designed as an OEM-style replacement or direct addition to combination wrench sets requiring a 3-1/2 inch drive for heavy industrial and mechanical fastener applications.

Installation Notes

This wrench is intended for use by qualified mechanics, millwrights, and industrial maintenance technicians. Always confirm the fastener size before applying torque to avoid rounding or tool slip. When using in an elevated or restricted access area, attach the tether point to an approved tool lanyard before beginning work. Inspect the wrench for cracks or deformation before each use and remove from service if damage is found.