Socket YATO YT-1291 1/2" drive, metric sockets, 3.4 cm diameter, 42 mm length

YATO YT-1291 is a 1/2" drive metric socket engineered for use with ratchets and torque tools. With a 3.4 cm external diameter and a length of 42 mm, the socket provides secure engagement with metric fasteners and is designed to withstand the demands of automotive, maintenance and industrial work. The design ensures proper torque transfer and a reliable fit on hexagonal nuts and bolts where a sturdy 1/2" metric socket is required.

Advantages

The socket's 1/2" drive size offers compatibility with a wide range of ratchets and torque wrenches commonly used in professional and hobbyist tool sets. Its metric internal profile ensures accurate seating on metric fasteners, reducing the risk of rounding. The 42 mm length provides access to recessed nuts while the 3.4 cm outer diameter balances strength and clearance. Manufactured by YATO, the tool is intended for repeated use under mechanical load and for tasks that require dependable torque application.

Suitable for

• Automotive repair and maintenance tasks
• Industrial assembly and machinery servicing
• General mechanical maintenance and workshop use
• Use with 1/2" drive ratchets and torque wrenches

Key specifications

• Drive size: 1/2" (square drive)
• Profile: Metric socket for hexagonal fasteners
• External diameter: 3.4 cm
• Length: 42 mm
• Suitable for use with ratchets and torque tools
• Intended use: automotive, maintenance, industrial applications

How to use

Select a socket of the correct metric size and attach it securely to a compatible 1/2" drive ratchet or torque wrench. Place the socket squarely onto the fastener head to ensure full contact between the internal socket profile and the nut or bolt. Apply torque gradually and maintain alignment to avoid slipping or rounding. After use, clean debris from the socket bore and exterior; store in a dry place or in a tool case to prevent corrosion and maintain fit.

Usage recommendations

Use the socket with tools rated for the intended torque range and avoid applying impact loads unless the socket is specified for impact use. Inspect the socket for wear or deformation before use, and replace it if the internal profile shows rounding or cracks. For best results in confined spaces, pair the socket length and drive with appropriate extensions or universal joints.