Paramount PAR37113 Hex Key 5/16 Inch Long Arm

Product Description

The PARAMOUNT PAR37113 is a long-arm hex key with a 5/16-inch hex end, designed for driving hex socket fasteners in confined or hard-to-reach spaces. The extended 6-inch overall length provides additional torque leverage compared to standard short-arm keys, reducing hand fatigue during repetitive fastening tasks. Constructed from steel, this tool is suited for heavy-duty service applications in HVAC, plumbing, electrical, and general mechanical work. It is a practical hand tool for trade professionals who need reliable, everyday hex drive capability without specialized equipment.

This hex key is used across a wide range of trade installation and service scenarios. The long-arm design is particularly useful when accessing fasteners inside equipment enclosures, control panels, or tight mechanical assemblies where a short-arm key lacks the reach or leverage required. The 5/16-inch hex size fits a common fastener dimension found in HVAC equipment, pump assemblies, and other mechanical systems. This tool is sold individually per package, with a minimum order quantity of 5 units.

Key Features

• 5/16-inch hex end fits standard hex socket fasteners
• Long-arm style provides extended reach and increased torque leverage
• 6-inch overall length for access in confined spaces
• Steel construction for durability in trade service environments
• Inch measurement system; consistent sizing across standard hex fastener sets

Compatibility

Designed as a standard long-arm hex key for use with 5/16-inch hex socket fasteners across residential and commercial trade applications.

Installation Notes

This hex key is a hand tool used by HVAC technicians, plumbers, electricians, and mechanical service professionals. Always power down or shut off the appropriate system before accessing fasteners on energized or pressurized equipment. Ensure the hex key is fully seated in the fastener socket before applying torque to avoid rounding the socket head. Inspect the tool for wear or deformation before each use.