Paramount PAR37180 Hex Key 12 Mm Long Arm

Product Description

The PARAMOUNT PAR37180 is a long-arm hex key designed for high-torque fastener driving in metric hex socket applications. Built from Protanium High Torque Steel, it delivers the torsional strength required for heavy-duty service work where standard alloy keys may slip or deform under load. The long arm provides extended reach into deep or recessed fastener locations, while the short arm serves as a torque-driving handle. At 8.7 inches overall length, it fits comfortably in a tool bag alongside other metric hand tools. HVAC, plumbing, pool equipment, and mechanical trades all encounter metric hex fasteners regularly, making this a practical addition to any service kit.

The PAR37180 is suited for residential and light commercial service work involving metric hex socket fasteners. Pool equipment installations, HVAC equipment assembly and service, pump mounting hardware, and general mechanical fastener work are all typical applications. The 12 mm hex size addresses larger-format fasteners found on pump housings, motor mounts, and structural equipment hardware. The gray handle and long-arm geometry are consistent with professional-grade hand tool sets used in the field.

Key Features

• Protanium High Torque Steel construction resists twisting and deformation under heavy load
• Long-arm style provides extended reach into recessed or obstructed fastener locations
• 12 mm metric hex size for large-format socket head fasteners
• 8.7 inches overall length for comfortable grip and leverage
• Hex end type engages fastener socket fully for reliable torque transfer

Compatibility

Designed for use with metric 12 mm hex socket head cap screws and set screws found in HVAC equipment, pool and spa hardware, pump assemblies, and general mechanical installations.

Installation Notes

Hex keys are a hand-tool application and do not require power isolation before use in most cases, though equipment should be de-energized and depressurized before loosening or tightening any structural fasteners. Apply steady, controlled force through the long arm to avoid rounding the fastener socket. Do not use pipe extensions or cheater bars on the long arm, as overloading the key beyond its design limit can cause fracture. Replace any key showing visible twist deformation.