Paramount PAR37147 Hex Key 0.70 Mm Long Arm

Product Description

The PARAMOUNT PAR37147 is a metric hex key designed for fastener driving in tight or deep-access applications. Built from Protanium High Torque Steel, this long-arm L-key delivers increased torque leverage compared to standard-arm versions. The hex tip measures 0.70 mm, placing it in the sub-1 mm range used for precision fasteners on small mechanical assemblies, electronics enclosures, and instrumentation hardware. Overall length is 2.625 inches. At 0.01 pounds, it is a lightweight single-piece hand tool suited for bench work and field service kits alike. Technicians across HVAC, refrigeration controls, and pool equipment service will recognize this size for set screws and adjustment fasteners on compact components.

This hex key is appropriate for any trade application requiring a 0.70 mm metric hex drive. It is commonly used when servicing small set screws on motor shafts, valve stems, and precision mechanical assemblies. The long arm style allows the short end to be inserted into the fastener while the long end provides torque, or reversed for reach into recessed fastener locations. It is packaged individually and sold in multiples of 10 units per order.

Key Features

• 0.70 mm metric hex size for sub-1 mm precision fasteners
• Long arm style increases torque leverage and reach into recessed locations
• Protanium High Torque Steel construction for durability under load
• Overall length of 2.625 inches suits compact work envelopes
• Gray handle for easy identification in multi-key sets
• Lightweight at 0.01 pounds — suitable for tool roll or field kit

Compatibility

Designed for use with any 0.70 mm metric hex fastener, including set screws and socket-head cap screws found in precision mechanical and electromechanical assemblies.

Installation Notes

This tool is used by any trade technician working with sub-1 mm metric hex fasteners. Always confirm the hex size matches the fastener recess before applying torque to avoid rounding. De-energize and isolate any equipment before accessing internal fasteners. Keep hex keys free of oil or debris to maintain seating accuracy in small fastener recesses.