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SOCKET IMPACT 3/8DR 12MM UNIV DEEP 6PT - GearWrench

Part #: 84378

The GearWrench 84378 is a 3/8-inch drive, 12mm universal deep impact socket with a 6-point design.

Key Features

  • Durable Construction The socket is constructed from chrome molybdenum alloy steel (Cr-Mo) for enhanced strength and durability.
  • Off-Corner Loading Design It features an off-corner loading design that is engineered to reduce fastener rounding.
  • Corrosion Resistance A black oxide finish provides resistance to corrosion.
  • High-Visibility Markings High-visibility laser-etched markings and secondary hard stamped size markings allow for quick size identification.
  • Deep and Universal Design The deep length allows access to fasteners in recessed areas, while the universal joint design provides flexibility for reaching fasteners at various angles.
  • Impact-Rated Designed to withstand the high torque and shock loads generated by impact tools.

Applications

This impact socket is suitable for high-torque applications across various professional and demanding scenarios. It is commonly used in automotive repairs for tasks such as removing lug nuts and other stubborn fasteners, particularly those in recessed or hard-to-reach locations. The socket also excels in construction for assembling and disassembling heavy machinery, as well as in industrial maintenance for working with large bolts and nuts in manufacturing settings.

Benefits

  • Enhanced Durability The chrome molybdenum steel construction provides significant strength and durability, enabling the socket to withstand the forces of impact tools without premature wear or breakage.
  • Reduced Fastener Damage The off-corner loading design helps to minimize the risk of fastener rounding, promoting a more secure grip and preserving the integrity of both the fastener and the tool.
  • Efficient Operation Its robust construction and design contribute to quicker and more effective loosening or tightening of stubborn fasteners, improving overall work efficiency.
  • Improved Access The deep and universal design offers an extended reach and angled access, facilitating work on fasteners that are otherwise difficult to reach with standard sockets.
  • Safety Engineered to absorb the vibrations and impacts from power tools, the socket is less prone to shattering compared to standard sockets, enhancing safety during operation.

Specifications

  • Part Number: 84378
  • Drive Size: 3/8 inch
  • Socket Size: 12mm
  • Drive Type: 6 Point
  • Length Format: Deep
  • Measurement Standard: Metric
  • Material: Chrome-Molybdenum (Cr-Mo)
  • Finish: Black Oxide
  • Overall Length: 2.48 inches
  • Weight (Catalog): 0.19 lb
  • ASME Specification: Meets or exceeds ASME B107.33M

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This product was added to our catalog on Tuesday 03 March, 2026.