Paramount PAR37109 Hex Key 5/32 Inch Long Arm

Product Description

The PARAMOUNT PAR37109 is a long-arm hex key with a 5/32-inch hex end, designed for driving hex socket fasteners in tight or hard-to-reach locations. Constructed from steel, it delivers the durability and torque transfer required for repeated use in mechanical assembly and service work. The long arm configuration provides extended reach and increased leverage compared to standard-arm keys, making it a practical choice for HVAC, plumbing, electrical, and general mechanical trades wherever hex fasteners are encountered. Overall length is 4-13/64 inches, and the part is sold individually.

This hex key is suited for residential and light commercial service applications where 5/32-inch hex fasteners are standard. Common use cases include equipment panel fasteners, valve packing nuts, setscrew fittings, and mechanical assemblies found in HVAC units, pumps, and piping systems. The long arm design gives technicians improved access in recessed or obstructed fastener locations without requiring a power tool.

Key Features

• 5/32-inch hex end size for precise fastener engagement
• Long arm style provides extended reach and greater leverage
• Steel construction for durability under repeated torque loads
• 4-13/64-inch overall length suits a wide range of service scenarios
• Inch measurement system for compatibility with standard imperial fasteners

Compatibility

Designed for use with standard 5/32-inch hex socket fasteners in imperial measurement systems across HVAC, plumbing, electrical, and general mechanical applications.

Installation Notes

This tool is used by HVAC technicians, plumbers, electricians, and general mechanics for fastener installation and removal. Always de-energize equipment and shut off fluid supply lines before accessing fasteners on live systems. Ensure the hex key fully seats in the fastener socket before applying torque to avoid rounding the drive recess. No special certifications or codes govern hand tool use, but follow applicable trade safety standards for the equipment being serviced.