Proto J31617 Open End Wrench 16 Mm X 17 Mm Double End

Product Description

The PROTO J31617 is a double-ended open end wrench sized at 16 mm and 17 mm, built for professional-grade fastener work in mechanical, HVAC, plumbing, and industrial service environments. Forged from steel with a satin finish, it delivers a clean grip surface that resists glare and reduces surface marring on fastener flats. The 15-degree head angle offsets the wrench from the work plane, giving technicians clearance to swing in confined spaces without repositioning as frequently. At 0.33 pounds, it is light enough for overhead and tight-access work. This is a hand tool designed for daily trade use where fit and durability on metric fasteners matter.

The J31617 suits residential and commercial service applications wherever 16 mm or 17 mm metric fasteners appear. Common uses include equipment mounting hardware, refrigerant line fittings, pipe unions, conduit fittings, and machinery fasteners. The dual-size configuration reduces the number of tools a tech needs on the job, making it a practical addition to a service pouch or roll. It is well suited for HVAC service techs, pipefitters, plumbers, and general maintenance professionals who work regularly with metric hardware.

Key Features

• Double-ended design provides both 16 mm and 17 mm openings in a single tool
• 15-degree head angle improves clearance in tight or obstructed fastener locations
• Steel construction for durability under daily trade use
• Satin finish reduces glare and surface marring on fastener flats
• Lightweight at 0.33 pounds for comfortable use in overhead or confined-space work
• Backed by a lifetime warranty from PROTO

Compatibility

Designed as an OEM-style replacement and standard service wrench for use with 16 mm and 17 mm metric fasteners across HVAC, plumbing, electrical, and general mechanical applications.

Installation Notes

This wrench is a hand tool requiring no installation. Technicians should confirm the correct metric size before applying torque to avoid rounding fastener flats. Always ensure the wrench is fully seated on the fastener before turning. Inspect the tool regularly for wear or deformation that could compromise grip on fastener surfaces.