Proto J5020MH Deep Hand Socket 20mm 3/8 Drive 6-pt

Product Description

The PROTO J5020MH is a deep hand socket designed for professional hand-tool use in maintenance, repair, and assembly applications. Built to a 20 mm socket size with a 3/8 inch drive, it features a 6-point contact geometry that delivers full, flat-face engagement on fastener flats, reducing the risk of rounding under load. The chrome-plated finish resists corrosion and simplifies cleaning in shop environments. At 2.8 inches in length, the deep profile provides the clearance needed to reach recessed or stud-mounted fasteners that standard-depth sockets cannot access. Manufactured to ASME B107.5 standards, this socket meets the dimensional and strength requirements expected on professional job sites.

This socket is suited for automotive, industrial, and general mechanical work where a 3/8 inch drive ratchet, breaker bar, or torque wrench is in use. The deep length makes it particularly useful when working around protruding threaded studs, long bolt shanks, or deeply countersunk fasteners on engine assemblies, suspension components, machinery, and equipment frames. It is installed by mechanics, millwrights, and service technicians across both residential and commercial trade environments.

Key Features

• 20 mm socket size with 3/8 inch drive compatibility
• 6-point design maximizes contact area on fastener flats and reduces slippage
• Deep length at 2.8 inches for access to recessed or stud-mounted fasteners
• Chrome-plated finish for corrosion resistance and easy surface cleaning
• Manufactured to ASME B107.5 dimensional and performance standards

Compatibility

Designed for use with standard 3/8 inch drive ratchets, extensions, and torque wrenches requiring a 20 mm deep socket.

Installation Notes

Always confirm the drive tool is rated for the torque being applied before use. Inspect the socket for cracks or deformation before each use and replace if damage is found. Do not use hand sockets with impact drivers or impact wrenches unless the socket is specifically impact-rated. Keep the socket and drive connection free of debris to ensure secure seating during operation.