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3/4" Drive 21mm 12-Point Metric Standard Length Hand Socket - Stanley Proto Industrial Tools

Part #: J5521M

The Stanley Proto J5521M 3/4" Drive 21mm 12-Point Metric Standard Length Hand Socket is engineered for demanding professional automotive and industrial applications. Crafted from high-quality steel, this durable and reliable socket provides secure fastener engagement and is built to withstand rigorous daily use in professional environments. It's an essential component for technicians requiring precise fit and long-term performance from their hand tools.

Key Features

  • 3/4" Drive System: Designed for heavy-duty applications requiring higher torque output, compatible with professional-grade ratchets and breaker bars.
  • 21mm 12-Point Metric Design: Ensures precise fit on 21mm metric fasteners, while the 12-point configuration allows for easier indexing and engagement, especially in confined spaces.
  • TORQUEPLUS® Fastening System: This unique design drives fasteners from the flats, not the corners, minimizing fastener rounding and allowing users to apply more torque.
  • Professional-Grade Construction: Manufactured from high-quality alloy steel, heat-treated for optimal strength, durability, and resistance to wear under industrial conditions.

Applications

This versatile hand socket is ideal for a broad range of tasks encountered by professional mechanics and industrial maintenance crews. It is well-suited for automotive repair, including suspension work, engine component servicing, and heavy truck maintenance where 21mm metric fasteners are common. Furthermore, it excels in industrial settings for equipment assembly, machinery repair, and general maintenance operations that demand robust and reliable tooling.

Specifications

  • Drive Size: 3/4 inch
  • Socket Size: 21mm
  • Points: 12
  • Length: 50.8mm
Browse 3/4 in drive metric sockets

This product was added to our catalog on Wednesday 09 June, 2010.