Gearwrench 84927n 3/8 in Socket Extension Set 3 Piece

Product Description

The GEARWRENCH 84927n is a 3-piece impact socket extension set designed for use with 3/8 inch drive impact tools and sockets. Each extension features a female square input drive and a male square output drive, both in 3/8 inch size, making them direct pass-through extensions in the same drive line. Constructed from chrome molybdenum alloy steel with a black phosphate finish, these extensions are built to handle the torque demands of impact work. The set includes three lengths — 3 inches, 6 inches, and 12 inches — giving technicians the reach needed for recessed fasteners in tight or deep applications. A locking mechanism is included on each piece to retain sockets securely during use.

This set is suited for professional mechanics, HVAC technicians, plumbers, and electricians who rely on 3/8 inch drive impact tools for service and installation work. The three included lengths cover a wide range of access scenarios, from shallow panel work to deep fastener wells in equipment cabinets, compressor housings, pipe hangers, and electrical enclosures. The black phosphate finish resists corrosion in shop and field environments. These extensions conform to ASME standards and are measured in SAE sizing.

Key Features

• 3-piece set includes 3 inch, 6 inch, and 12 inch extension lengths
• Chrome molybdenum alloy steel construction for high-torque impact use
• Black phosphate finish provides corrosion resistance
• Locking mechanism retains impact sockets during use
• 3/8 inch female square input and 3/8 inch male square output — same-size drive pass-through
• Meets ASME standards; SAE measurement type

Compatibility

Designed for use with 3/8 inch drive impact tools and 3/8 inch drive impact sockets. Compatible with standard square-drive 3/8 inch impact tooling across common trade applications.

Installation Notes

Install and remove these extensions with the impact tool powered down and air supply disconnected or battery removed. Confirm the locking detent is fully engaged before applying torque to prevent socket ejection. Inspect extensions for cracks or deformation before each use — do not use damaged extensions under impact loads. These extensions are not insulated and should not be used near energized electrical components without appropriate lockout/tagout procedures in place.

Technical Specifications

• Material: Chrome Molybdenum Alloy Steel
• Finish: Black Phosphate
• Input Drive Size: 3/8 inches
• Output Drive Size: 3/8 inches
• Input Drive Gender: Female
• Input Drive Shape: Square
• Output Drive Gender: Male
• Output Drive Shape: Square
• Overall Lengths: 3 inches, 6 inches, 12 inches
• Number of Pieces: 3
• Measurement Type: SAE
• Standards: ASME
• Insulated: Not Insulated
• Locking: Locking Included
• Country of Origin: Taiwan (subject to change)

Standard Information

• Brand: GEARWRENCH
• Manufacturer Part Number: 84927n