Paramount PAR37216 Hex Key 1/2 Inch Short Arm

Product Description

The PARAMOUNT PAR37216 is a short-arm hex key designed for driving 1/2-inch hex fasteners in confined or torque-demanding applications. Built from Protanium High Torque Steel, this key delivers greater torsional strength than standard chrome vanadium tools, reducing the risk of rounding or tool failure under heavy loads. The short-arm configuration gives the user increased torque leverage while keeping the tool compact for work in tight spaces. With an overall length of 5-19/64 inches, it fits comfortably in a technician's hand and stores easily in a service bag or tool roll. This key is handled by HVAC technicians, plumbers, electricians, and general maintenance professionals who work with hex-drive fasteners on equipment panels, valves, and mechanical assemblies.

This hex key is suited for residential and light commercial service work where 1/2-inch hex fasteners are encountered. Common applications include tightening or removing set screws on shaft collars, pulleys, couplings, and access panel hardware. The short-arm style is particularly useful when working inside equipment enclosures or mechanical rooms where swing clearance is limited. It is an inch-system tool intended for standard SAE fastener applications.

Key Features

• Protanium High Torque Steel construction for increased torsional strength over standard alloy keys
• Short-arm design provides high torque output in confined workspaces
• 1/2-inch hex end engages SAE hex fasteners and set screws
• 5-19/64 inch overall length for a balanced grip and controlled application of force
• Gray handle color for quick identification in a mixed tool set

Compatibility

Designed for use with 1/2-inch hex drive fasteners in inch-system applications. Suitable as a replacement or supplemental short-arm hex key for general trade service work involving SAE hex socket fasteners.

Installation Notes

Ensure the fastener hex recess is clean and free of debris before inserting the key to prevent slipping and fastener damage. Verify the fastener size matches the 1/2-inch key before applying torque. Never extend the short arm with a pipe or cheater bar, as this can exceed the design load of the tool and cause failure. Replace the key if the hex end shows signs of rounding or deformation.