Paramount PAR37220 Hex Key 7/8 Inch Short Arm

Product Description

The PARAMOUNT PAR37220 is a short-arm hex key designed for high-torque fastening applications in trade and industrial environments. It features a 7/8-inch hex end and an overall length of 8-13/64 inches, giving technicians a compact grip profile suited for confined spaces. The key is manufactured from Protanium High Torque Steel, a material engineered for increased torsional strength over standard chrome vanadium hex keys. The gray handle provides a visual indicator of the tool grade. HVAC technicians, plumbers, electricians, and general service pros keep tools like this on hand for equipment assembly, panel work, and mechanical fastener service.

The PAR37220 is suited for applications requiring a 7/8-inch hex drive in short-arm format. The short arm configuration is preferred in installations where swing clearance is limited, such as inside equipment cabinets, mechanical rooms, or panel enclosures. It is appropriate for both residential and light commercial service work wherever 7/8-inch socket head cap screws or set screws are encountered. The single-piece construction and high-torque steel make it reliable for repeated use in demanding field conditions.

Key Features

• 7/8-inch hex end for socket head cap screws and set screws
• Short arm style for use in confined or restricted-clearance spaces
• Protanium High Torque Steel construction for increased torsional strength
• Overall length of 8-13/64 inches for a compact, controlled grip
• Gray handle for quick grade and size identification in the tool bag

Compatibility

Designed as a standard short-arm hex key for any application requiring a 7/8-inch hex drive in the inch measurement system.

Installation Notes

This tool is used by HVAC technicians, plumbers, electricians, and mechanical service professionals. Ensure the hex end is fully seated in the fastener socket before applying torque to prevent rounding. Inspect the key for wear or deformation before use on critical fasteners. No power source or lockout procedure is required for hand tool service, but always follow applicable safety protocols for the equipment being serviced.