Proto J4973 Hex Key Set 6 Piece

Product Description

The PROTO J4973 is a 6-piece hex key set designed for fastener driving in maintenance, repair, and installation work across mechanical and trade applications. Hex keys — also called Allen wrenches — engage socket-head cap screws and set screws commonly found in HVAC equipment, electrical enclosures, plumbing fixtures, and general mechanical assemblies. The J4973 set provides six key sizes in a single package, reducing the need to source individual keys for varied fastener sizes. At 0.85 pounds, the set is compact enough for a tool bag or service van kit. It is suited for technicians who need reliable hand tools on the job site.

This hex key set is appropriate for residential and light commercial service work where socket-head fasteners are encountered. Typical applications include equipment panel removal, set screw adjustment on pulleys and couplings, and assembly or disassembly of mechanical components. The 6-piece configuration covers a practical range of common hex sizes for general trade use. It is a straightforward addition to any service technician's hand tool inventory.

Key Features

• 6-piece set provides multiple hex sizes in a single package
• Suited for socket-head cap screws and set screws in trade and mechanical applications
• Compact, lightweight package at 0.85 pounds for portability
• Packaged quantity of 1 set per unit for straightforward ordering

Compatibility

Designed as a general-purpose hex key set compatible with standard socket-head cap screws and set screws found across HVAC, plumbing, electrical, and mechanical equipment.

Installation Notes

Hex keys are used by HVAC technicians, plumbers, electricians, and general maintenance professionals. Always de-energize electrical equipment and shut off mechanical systems before accessing fasteners in live panels or rotating assemblies. Select the correct key size to avoid rounding fastener heads. No special certifications or permits are typically required for hand tool use, but always follow applicable codes and employer safety procedures.