Paramount PAR37264 Hex Key 5 Mm Short Arm

Product Description

The PARAMOUNT PAR37264 is a short-arm hex key designed for driving hex fasteners in confined or tight-clearance spaces. The 5 mm hex end engages socket-head cap screws, set screws, and other internal-hex fasteners commonly found in mechanical assemblies, HVAC equipment, pump housings, and electrical enclosures. With an overall length of 3-7/64 inches (78 mm), the short-arm geometry provides increased torque on the driving end while keeping the tool compact. This metric key is a standard hand tool for HVAC technicians, plumbers, electricians, and mechanical service professionals who work with metric fasteners on a daily basis.

The PAR37264 is suited for service and installation work on equipment that uses 5 mm metric hex fasteners. Typical applications include tightening set screws on motor couplings, adjusting valve packing glands, securing panel hardware, and general mechanical assembly where a compact tool profile is required. The short-arm configuration is particularly useful when working inside control panels, unit cabinets, or any area where a full-length L-key would be obstructed. This tool is sold individually per package.

Key Features

• 5 mm hex end fits standard metric socket-head and set-screw fasteners
• Short-arm design provides clearance in tight or recessed work areas
• Overall length of 3-7/64 inches (78 mm) keeps the tool compact and easy to handle
• Hex end type for direct engagement with internal-hex fasteners
• Lightweight at 0.043 pounds, suitable for tool pouches and belt kits

Compatibility

Designed as a general-purpose metric hex key for use with 5 mm internal-hex fasteners across HVAC, plumbing, electrical, and mechanical service applications.

Installation Notes

Hand tools require no installation, but always ensure power is removed from electrical equipment and refrigerant or fluid systems are depressurized before loosening or tightening fasteners in live systems. Apply steady, controlled force to avoid rounding hex sockets, particularly on stainless or hardened set screws. Inspect the hex key tip for wear or deformation before use to prevent fastener damage.