Proto J5420MH Hand Socket 20mm 6-point 1/2 in Drive

Product Description

The PROTO J5420MH is a 20 mm, 6-point hand socket built for professional-grade fastener work in mechanical, industrial, and trade service environments. Designed for use with a 1/2 inch drive ratchet or breaker bar, this standard-length socket features a chrome-plated finish that resists corrosion and simplifies cleaning after use. The 6-point design concentrates drive force on the flat sides of a fastener, reducing the risk of rounding off hex heads under high torque. Manufactured to ASME B107.5 standards, it is suited for licensed mechanics, maintenance technicians, and industrial service professionals who require certified tooling.

This socket fits standard 1/2 inch drive tool setups and is appropriate for automotive, heavy equipment, and general mechanical applications where a 20 mm fastener size is commonly encountered. Its standard length profile works in most open-access situations without the reach limitations of deep sockets. The chrome finish makes it easy to identify and wipe clean in shop environments where socket sets are in constant rotation.

Key Features

• 20 mm socket size with 6-point design for secure engagement on hex fasteners
• 1/2 inch drive compatible with standard ratchets, breaker bars, and torque wrenches
• Chrome-plated finish for corrosion resistance and easy cleaning
• Standard length profile suits most open-access fastener locations
• Manufactured to ASME B107.5 standards for professional tool compliance
• Lightweight at 0.22 pounds for reduced hand fatigue during extended use

Compatibility

Designed as a standard OEM-style 1/2 inch drive hand socket for use with any 1/2 inch drive ratchet, extension, or torque wrench accepting industry-standard square drive tooling.

Installation Notes

This socket is intended for use by mechanics and maintenance technicians working on mechanical fasteners. Always ensure the drive tool and socket are fully seated before applying torque to prevent slippage or fastener damage. Inspect the socket for cracks or deformation before each use, and never use hand sockets with impact drivers unless rated for impact service. Follow applicable workplace safety standards when working in industrial or automotive service environments.