Proto J5018M 18mm 12-point Deep Hand Socket 3/8 Drive

Product Description

The PROTO J5018M is an 18 mm, 12-point deep hand socket designed for 3/8 inch drive ratchets and extensions. The deep length profile provides clearance to reach recessed or partially obscured fasteners that a standard-depth socket cannot access. Built with a chrome-plated finish for corrosion resistance, this socket meets ASME B107.5 standards for hand sockets. It is used by mechanics, millwrights, and maintenance technicians across automotive, industrial, and commercial service applications.

This socket is suited for professional hand-tool use in automotive repair, equipment maintenance, and general mechanical service. The 12-point configuration engages fasteners at multiple contact angles, making it practical in tight quarters where full ratchet swing is limited. The deep length is particularly useful when working with long bolt threads, studs, or recessed hex-head fasteners. Licensed tradespeople and professional mechanics will find this socket fits standard 3/8 inch drive tool sets.

Key Features

• 18 mm socket size fits standard metric fasteners
• 12-point design provides multiple engagement positions in confined spaces
• Deep length profile reaches recessed and stud-mounted fasteners
• 3/8 inch drive compatibility with common ratchets and extensions
• Chrome-plated finish resists corrosion and simplifies cleaning
• Meets ASME B107.5 hand socket standards

Compatibility

Designed as an OEM-style replacement or direct addition to standard 3/8 inch drive hand socket sets used in professional mechanical and maintenance service.

Installation Notes

This socket is installed by hand tool technicians using a 3/8 inch drive ratchet, breaker bar, or torque wrench. Ensure the fastener size matches the 18 mm socket before applying torque to avoid rounding. Inspect the socket for cracks or deformation before each use and remove from service if damage is found. Do not use impact drivers with this hand socket unless the tool is rated and marked for impact use.