Proto J5428MH 28mm 6-point 1/2 Dr Hand Socket

Product Description

The PROTO J5428MH is a 28 mm, 6-point hand socket designed for 1/2 inch drive ratchets, breaker bars, and torque wrenches. Built to ASME B107.5 standards, this standard-length socket features a chrome-plated finish that resists corrosion and simplifies cleaning in shop environments. At 0.48 pounds, it is a solid, well-balanced tool suited for automotive, industrial maintenance, and mechanical assembly work. The 6-point geometry delivers full-contact engagement on fastener flats, reducing the risk of rounding under load. Technicians and mechanics working with larger metric fasteners will find this socket a reliable addition to a professional 1/2 inch drive set.

This socket is suited for professional hand-tool use in automotive repair, fleet maintenance, heavy equipment service, and general industrial applications. The 28 mm size is commonly encountered on larger metric fasteners found in drivetrain components, suspension assemblies, and industrial machinery. Standard length makes it appropriate for open-access fasteners where a deep socket is not required. It is intended for use with any standard 1/2 inch drive hand tool.

Key Features

• 28 mm socket size for larger metric fasteners
• 6-point design provides full flat-to-flat contact, reducing fastener damage under high torque
• 1/2 inch drive compatible with standard ratchets, breaker bars, and torque wrenches
• Chrome-plated finish resists corrosion and wipes clean easily
• Standard length profile for open-access fastener locations
• Meets ASME B107.5 standards for hand socket tools

Compatibility

Designed for use with standard 1/2 inch drive hand tools including ratchets, breaker bars, extensions, and torque wrenches. Compatible with any 1/2 inch drive tool conforming to standard square drive dimensions.

Installation Notes

This socket is intended for use by qualified mechanics and technicians familiar with hand-tool safety practices. Ensure the socket is fully seated on the fastener and the drive tool before applying torque. Do not use hand sockets with impact drivers or impact wrenches unless the socket is rated for impact use. Inspect the socket for cracks or damage before each use and remove from service if any defects are found.