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3/8 Sq. Dr. Extra Deep Metric NUT GRIP® Socket - 12mm - Koken

Part #: 3350M-12(L120)

The Koken 3350M-12(L120) 3/8 Sq. Dr. Extra Deep Metric NUT GRIP® Socket – 12mm is a precision-engineered tool designed for professional technicians and mechanics tackling demanding fastening tasks. Manufactured in Japan, this socket combines Koken's renowned quality with an innovative design to significantly enhance efficiency and security in challenging environments.

Key Features

  • Advanced NUT GRIP® Retention System: Features a unique internal spring ring and ball bearing mechanism that securely holds nuts and bolts without the need for magnets, preventing accidental drops and improving control in tight or overhead applications.
  • Extra Deep Profile (120mm Length): Engineered to access deeply recessed fasteners, long studs, and obstructions that standard sockets cannot reach.
  • 3/8" Square Drive: Ensures broad compatibility with professional-grade ratchets, torque wrenches, and extensions for versatile use in automotive and industrial settings.
  • Precision 12mm Metric Size: Provides an accurate, six-point fit for 12mm metric fasteners, minimizing the risk of rounding or damage.
  • Durable Chrome Molybdenum Steel: Constructed from high-quality Chrome Molybdenum Steel for superior strength, longevity, and resistance to wear under rigorous daily use.
  • Corrosion-Resistant Chrome Finish: A polished chrome-plated finish offers enhanced durability, corrosion resistance, and easy cleaning.

Applications

This Koken extra deep NUT GRIP® socket is an essential tool for various professional applications, including intricate automotive maintenance and repair, such as accessing deeply set spark plugs or engine bay fasteners. It is also ideal for industrial machinery assembly, equipment servicing, and any task involving deeply seated 12mm metric fasteners in confined or hard-to-reach areas, ensuring secure handling and installation.

Specifications

  • Manufacturer: Koken
  • Model Number: 3350M-12(L120)
  • Drive Size: 3/8 inch square drive
  • Socket Size: 12mm Metric
  • Overall Length: 120mm
  • Material: Chrome Molybdenum Steel
  • Finish: Chrome-Plated
  • Country of Origin: Japan
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List: $54.15 Save: $12.38

$41.77

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  • Model: 423514
  • Shipping Weight: 0.26lbs
  • UPC: 4991644034598
  • Manufacturers Part #: 3350M-12(L120)
  • Manufactured by: Koken
  • Also Known As: KKN3350M-12L120

This product was added to our catalog on Wednesday 06 May, 2026.