Proto JSCV10B Combination Wrench 5/16 Inch 12-point

Product Description

The PROTO JSCV10B is a 5/16 inch combination wrench designed for professional trade use in mechanical, HVAC, plumbing, and electrical service work. It features a 12-point box end with a 15-degree head offset angle that improves access in tight or obstructed fastener locations. The open end provides fast nut engagement while the box end delivers greater torque. Constructed from steel with a chrome finish, this wrench measures 5-7/16 inches overall length and weighs 0.06 pounds. It is sized for everyday service tasks where a compact, lightweight hand tool is required.

The JSCV10B is suited for residential and commercial service applications where 5/16 inch fasteners are common, including equipment panel removal, bracket mounting, and component service on HVAC units, plumbing fixtures, and electrical enclosures. The 15-degree offset head angle reduces knuckle clearance issues in recessed or confined fastener positions. The chrome finish resists corrosion in field conditions and allows for easy cleaning after use. This wrench is a standard addition to a service technician tool kit.

Key Features

• 5/16 inch head size fits standard SAE fasteners common in equipment service
• 12-point box end for multiple grip positions on hex fasteners
• 15-degree head offset angle improves access in tight spaces
• Steel construction with chrome finish for durability and corrosion resistance
• Compact 5-7/16 inch overall length for use in confined work areas
• Limited lifetime warranty from the manufacturer

Compatibility

Designed as a standard SAE combination wrench for use on 5/16 inch hex fasteners across a wide range of residential and commercial trade service applications.

Installation Notes

This wrench is a hand tool used by HVAC technicians, plumbers, electricians, and general service professionals. Always ensure the wrench is fully seated on the fastener before applying force to avoid rounding fastener heads. Inspect the tool for cracks or damage before each use. Do not use extension bars or hammers on combination wrenches not rated for such applications.