Paramount PAR37217 Hex Key 9/16 Inch Short Arm

Product Description

The PARAMOUNT PAR37217 is a short-arm hex key designed for driving hex fasteners in confined spaces where a standard or long-arm wrench cannot fit. It features a 9/16-inch hex end and is manufactured from Protanium High Torque Steel, a hardened alloy formulation engineered to resist rounding under high-load applications. With an overall length of 5-51/64 inches (5.8 inches), the short arm geometry provides increased torque leverage in tight quarters while keeping the tool compact for toolbox or service bag storage. The gray handle and hex-end tip make this a straightforward drive tool for mechanical and trade work.

This hex key is suited for residential and commercial maintenance applications where 9/16-inch hex fasteners are common, including HVAC equipment panels, pump housings, pool equipment hardware, and general mechanical assemblies. It is used by HVAC technicians, plumbers, pool service professionals, and general maintenance trades whenever a standard L-key form factor is needed with a short reach. The short-arm style is especially practical when access clearance is limited and rotational swing must be minimized.

Key Features

• 9/16-inch hex end fits standard hex socket fasteners in that drive size
• Short-arm style provides torque in confined spaces with limited swing clearance
• Protanium High Torque Steel construction resists cam-out and rounding under load
• 5-51/64-inch overall length balances reach and compact form
• Gray handle for easy visual identification in a mixed tool set

Compatibility

Designed as a standard short-arm hex key for use with any 9/16-inch hex fastener in mechanical, HVAC, plumbing, or pool equipment service applications.

Installation Notes

Insert the hex tip fully into the fastener socket before applying torque to avoid rounding the drive surfaces. Power down or depressurize the equipment being serviced before loosening or tightening fasteners on pressurized or energized components. No special certifications are required to use hand tools, but work on licensed-trade systems should be performed by the appropriate credentialed professional in accordance with local codes.