Proto J5018MH 18mm 6-point Deep Hand Socket 3/8 Drive

Product Description

The PROTO J5018MH is an 18 mm deep hand socket designed for professional-grade hand tool applications. Built on a 3/8 inch drive, this 6-point socket provides full contact on fastener flats, reducing the chance of rounding under torque. The deep-length profile gives clearance for extended bolts, studs, and recessed fasteners that standard-length sockets cannot reach. A chrome-plated finish resists corrosion and makes surface cleaning straightforward after use. This socket is used by mechanics, pipefitters, electricians, and general maintenance technicians who need a reliable deep socket in their everyday drive set.

The J5018MH fits standard 3/8 inch drive ratchets, extensions, and torque wrenches. It is suited for automotive, HVAC equipment service, plumbing fixture work, and industrial maintenance tasks where an 18 mm fastener must be driven or removed in a confined or deep-reach situation. The deep-length design handles both standard hex bolts and stud-mounted hardware that a shallow socket cannot seat on properly.

Key Features

• 18 mm socket size fits metric fasteners on a 3/8 inch drive
• 6-point contact geometry reduces fastener rounding under load
• Deep-length profile provides clearance for studs and recessed bolts
• Chrome-plated finish for corrosion resistance and easy cleaning
• Single-piece solid construction rated for hand tool use

Compatibility

Designed as an OEM-style replacement or direct addition to any 3/8 inch drive hand tool set requiring an 18 mm deep socket.

Installation Notes

Install and remove fasteners with a properly rated 3/8 inch drive ratchet or torque wrench. Ensure the socket is fully seated on the fastener before applying torque to prevent slippage. Inspect the socket for cracks or wear before each use, and do not use with impact drivers unless the socket is rated for impact service.