Paramount PAR37291 Hex Key 22mm Short Arm

Product Description

The PARAMOUNT PAR37291 is a short-arm hex key designed for high-torque fastening applications requiring a 22 mm hex drive. Forged from Protanium High Torque Steel, this tool delivers superior torsional strength compared to standard chrome vanadium hex keys. The short-arm configuration measures 7.5 inches overall length, giving technicians better control in confined spaces. The gray handle and hex end design allow direct engagement with socket-head fasteners. HVAC, plumbing, and mechanical contractors reach for this key when working on large-diameter fasteners found in commercial equipment, pump assemblies, and industrial valve bodies.

This hex key is suited for trade professionals who encounter metric fasteners in the 22 mm range on commercial HVAC equipment, large pumps, compressor assemblies, and mechanical systems. The short-arm style is preferred in restricted access areas where a long-arm key would contact surrounding components. It is equally useful for pool equipment techs and plumbers servicing large flanged fittings or pump housings that use oversized socket-head cap screws.

Key Features

• 22 mm hex end engages large-diameter socket-head metric fasteners
• Protanium High Torque Steel construction resists twisting and deformation under load
• Short-arm design at 7.5 inches OAL improves control in tight or restricted spaces
• Gray handle provides visual identification and a secure grip surface
• Metric system measurement for compatibility with ISO-standard fasteners

Compatibility

Designed for use with 22 mm socket-head cap screws and hex fasteners conforming to metric standards, as commonly found in commercial HVAC, pump, and mechanical equipment assemblies.

Installation Notes

Licensed mechanical contractors and trade professionals should confirm fastener size before applying torque to avoid rounding hex socket heads. Always ensure the hex key is fully seated in the fastener before turning. Inspect the key for cracks or deformation before high-torque use, and replace the tool if any damage is observed.