Gearwrench 86178 3/8 in Hex Nut Driver Set Impact Rated

Product Description

The GEARWRENCH 86178 is an impact-rated hex nutsetter designed for use with impact drivers, power drills, and power screwdrivers. Built from chrome molybdenum alloy steel with a black oxide finish, it absorbs and transfers the torque generated by impact tools directly to the fastener. The 3/8-inch fastening size and 1/4-inch hex shank make it compatible with standard quick-change chuck systems. A torsion zone integrated into the shank design is rated to deliver up to 50 times longer service life in high-torque impact applications. Licensed tradespeople and professional installers use this tool for driving lag bolts and breaking loose frozen fasteners in demanding conditions.

This nutsetter is suited for residential and commercial construction, electrical rough-in, HVAC equipment installation, and general mechanical work where impact-rated hand tools are required. The dual-sized socket geometry is engineered to engage both SAE and metric fasteners, making it practical across a wide range of job sites. A tapered entry profile seats the socket quickly on damaged or corroded fasteners, and minus-size socket tolerances grip a broader range of worn hex heads. High-visibility laser-etched markings allow fast size identification without stopping work.

Key Features

• Impact-rated construction with torsion zone rated for up to 50 times longer life in high-torque applications
• Chrome molybdenum alloy steel for strength and durability under repeated impact loading
• Dual-sized socket fits both SAE and metric fasteners
• Minus-size socket geometry grips damaged or worn fastener heads
• Tapered entry for fast seating on corroded or damaged fasteners
• High-visibility laser-etched size markings for quick identification
• Bi-directional design supports both installation and removal

Compatibility

Designed for use with 1/4-inch hex shank impact drivers, power drills, and power screwdrivers accepting standard quick-change hex accessories. The 3/8-inch fastening size is compatible with both SAE and metric hex fasteners of equivalent dimension.

Installation Notes

This nutsetter is installed and used by electricians, HVAC technicians, plumbers, and general construction tradespeople. Ensure the 1/4-inch hex shank is fully seated and locked into the tool chuck before applying load. When using with impact drivers, confirm the tool is set to the appropriate torque or mode setting for the fastener material and application. Inspect the nutsetter for cracks or deformation before each use and replace if damaged.

Technical Specifications

• Fastening Size: 3/8 inches
• Tool Insertion Size: 1/4 inches Hex
• Overall Length: 2-9/16 inches
• Impact Rated: Yes
• Shank Shape: Hex
• Finish: Black Oxide
• Material: Chrome Molybdenum Alloy Steel
• Magnetized Tip: No
• Number of Nutsetters Included: 1
• Measurement System: Imperial
• Country of Origin: China (subject to change)

Standard Information

• Brand: GEARWRENCH
• Manufacturer Part Number: 86178