Proto J5427M Hand Socket 27mm 12-point 1/2 Drive

Product Description

The PROTO J5427M is a 27 mm, 12-point hand socket designed for professional-grade fastener work. Built from alloy steel with a chrome-plated finish, it accepts a 1/2-inch drive and measures 1-43/64 inches in overall length, making it a standard-length socket suited for general service applications. The 12-point configuration allows engagement at multiple angles in tight spaces, reducing the need to reposition the drive tool. This socket is rated to ASME B107.110-2012 and AS4984A standards, confirming it meets recognized performance benchmarks for hand tools in trade environments.

This socket is appropriate for use in automotive, mechanical, HVAC, and general industrial service where a 27 mm fastener size is encountered. Its standard length profile fits most service scenarios where a deep-reach socket is not required. The chrome finish resists corrosion during regular shop use. Licensed mechanics, HVAC technicians, plumbers, and general maintenance trades will find this socket fits into standard 1/2-inch drive ratchet and breaker bar setups without adapters.

Key Features

• 27 mm socket size for common metric fastener applications
• 12-point design allows engagement at 30-degree intervals for use in confined areas
• 1/2-inch drive compatible with standard ratchets, breaker bars, and torque wrenches
• Alloy steel construction provides strength under high-torque conditions
• Chrome-plated finish resists corrosion and simplifies cleaning
• Meets ASME B107.110-2012 and AS4984A standards

Compatibility

Designed as a standard 1/2-inch drive hand socket compatible with any 1/2-inch drive ratchet, torque wrench, or breaker bar accepting standard-length metric sockets.

Installation Notes

This socket is installed and used by qualified mechanics and trade technicians working with metric fasteners. Ensure the socket is fully seated on the fastener before applying torque to prevent rounding. Inspect the socket for cracks or wear before use on high-torque applications. This part is not tether capable and should not be used in overhead applications where drop hazards require tethered tooling.