Socket 12-point 1/2" 20 mm long STANLEY (model 864281)

Socket 12-point 1/2" 20 mm long STANLEY model 864281 is a long-reach 12-point socket designed for use with 1/2" drive ratchets and torque wrenches. The extended length provides access to recessed or hard-to-reach fasteners, while the 12-point profile allows quick engagement with bolt heads and nuts in confined spaces. Intended for professional and home workshop tasks, this STANLEY socket combines reach and a compact engagement profile to help reduce rounding of fasteners during loosening and tightening.

Advantages

The long 20 mm socket offers enhanced accessibility for fasteners located deep within assemblies. The 12-point geometry allows for multiple engagement angles, making it easier to work where swing clearance is limited. Compatible with 1/2" drive tools, the socket is suitable for use with ratchets and torque wrenches, enabling controlled torque application. The design reduces the need for extra adapters and minimizes re-positioning time when working on threaded fasteners.

Suitable for

• Automotive repairs and maintenance where recessed nuts and bolts occur
• Mechanical assembly and disassembly in workshops
• Maintenance tasks on machinery with limited access
• Use with torque wrenches for controlled tightening of fasteners

Key specifications

• Drive size: 1/2" (square drive)
• Socket profile: 12-point
• Nominal size: 20 mm
• Length: long type for recessed fasteners
• Intended use: manual ratchets and torque wrenches

How to use

Select the 20 mm 12-point socket and attach it to a compatible 1/2" drive ratchet or torque wrench. Slide the socket onto the fastener ensuring a full seating on the head to prevent slipping. For tightening, apply torque gradually and monitor torque wrench settings if precise torque values are required. For loosening, use controlled force and, if necessary, apply penetrating lubricant to seized fasteners before attempting removal.

Usage recommendations

Use the socket with the correct 1/2" drive tool and avoid impact tools unless the socket is specifically rated for impact use. Inspect the socket for wear or damage before use, and replace if any rounding or cracking appears. For critical fastenings, verify torque values with a calibrated torque wrench and follow manufacturer tightening specifications.