Socket 3/8" drive, Imperial set STANLEY STMT86312-0, length 85 mm, weight 59 g

STANLEY STMT86312-0 is a 3/8" drive imperial socket designed for fastening and loosening nuts and bolts in applications that require imperial sizes. The single socket measures 85 mm in length and is built to fit tools and ratchets with a 3/8" square drive. Its compact length and 3/8" interface make it suitable for work in tighter spaces while maintaining access to typical fasteners used in mechanical, automotive and maintenance tasks.

Advantages

The socket is made to industry standards for compatibility with 3/8" drive ratchets and extensions, offering reliable fit and torque transfer. Its 85 mm length provides extra reach compared with standard short sockets, allowing access to recessed fasteners. Lightweight construction at approximately 59 g supports comfortable handling and reduces additional weight in a tool kit while preserving durability for routine use.

Suitable for

• Automotive repair and servicing where imperial sockets are required
• Mechanical assembly and maintenance of machines using imperial fasteners
• General maintenance and household repairs involving nuts and bolts in imperial sizes
• Work in confined or recessed areas requiring additional reach

Key specifications

• Drive size: 3/8" square drive
• Socket system: imperial (inch) sizes
• Length: 85 mm
• Approximate weight: 59 g
• Typical application: fastening and loosening nuts and bolts

How to use

Select the correct imperial socket size for the fastener, push the socket onto a compatible 3/8" drive ratchet or extension until it clicks or seats securely, and apply torque in the required direction to tighten or loosen the fastener. For recessed fasteners, pair the socket with an extension bar as needed. Inspect the socket and drive interface before use to ensure clean surfaces and proper seating to avoid slippage or rounding of fasteners.

Usage recommendations

Use hand tools rated for the task and avoid applying impact loads unless the socket is specified for impact use. Keep the drive interface and socket surfaces clean and lightly lubricated to prevent corrosion and ensure consistent engagement. When working on critical fasteners, use a torque wrench compatible with a 3/8" drive to achieve specified torque values.