Proto J5418MN 18mm 12-point 1/2 Drive Hand Socket

Product Description

The PROTO J5418MN is a 12-point, 18 mm hand socket built for professional mechanics and tradespeople who work with 1/2 inch drive ratchets and breaker bars. Constructed from steel with a chrome-plated finish, this standard-length socket measures approximately 1-47/64 inches in overall length and weighs 0.134 pounds. The 12-point design engages fastener flats at multiple positions, reducing the arc needed to turn a bolt in tight spaces. It meets AS4984A, ASME B107.110-2012, and SAE AS955 standards, making it a specification-compliant choice for professional toolboxes.

This socket is suited for general mechanical work across automotive, HVAC, plumbing, and industrial maintenance applications where 18 mm fasteners are common. Standard-length geometry fits most 1/2 inch drive ratchets, extensions, and torque wrenches. It is appropriate for both shop and field use wherever a chrome hand socket is the specified tool for the task.

Key Features

• 18 mm socket size for metric fastener applications
• 12-point internal geometry allows engagement at 30-degree intervals in confined areas
• 1/2 inch drive compatible with standard ratchets, breaker bars, and torque wrenches
• Chrome-plated steel construction resists corrosion and cleans easily
• Meets AS4984A, ASME B107.110-2012, and SAE AS955 standards
• Lifetime warranty from the manufacturer

Compatibility

Designed for use with standard 1/2 inch drive ratchets, extensions, and torque wrenches requiring an 18 mm metric socket in a standard-length profile.

Installation Notes

Install and remove this socket by licensed mechanics or qualified tradespeople familiar with hand-tool safety practices. Inspect the socket for cracks or rounding before each use and replace if wear is visible. Do not use impact drivers with this hand socket unless the tool is rated for impact service. Keep the socket clean and dry to maintain the chrome finish and prevent fastener contamination.