Proto J5327M Deep Hand Socket 27mm 12-point

Product Description

The PROTO J5327M is a deep hand socket designed for professional-grade fastener work in mechanical, industrial, and maintenance trade applications. Built from alloy steel with a chrome-plated finish, this 12-point socket accepts a 1/2 inch drive and fits 27 mm fastener heads. The deep-length body measures 3.25 inches overall, giving technicians the clearance needed to reach recessed or stubbed bolts without an extension in many setups. It meets ASME B107.5 standards, confirming dimensional and strength compliance for hand tool use. Mechanics and maintenance professionals will find this socket suited to heavy-duty fastening tasks where depth and point count matter.

The J5327M is intended for use in automotive, fleet, industrial maintenance, and general mechanical service environments. The 12-point configuration engages both hex and double-hex fasteners, making it versatile across a wide range of bolt head types. The deep-length design is especially useful when working on wheel hubs, suspension components, cylinder head hardware, or any application where standard-length sockets cannot reach the fastener fully seated.

Key Features

• 27 mm socket size fits metric fasteners commonly found in automotive and industrial equipment
• 12-point design engages both standard hex and double-hex bolt heads
• Deep-length body at 3.25 inches overall provides clearance for recessed fasteners
• 1/2 inch drive compatible with standard ratchets, breaker bars, and torque wrenches
• Alloy steel construction with chrome-plated finish for corrosion resistance and durability
• Meets ASME B107.5 standards for hand socket tools

Compatibility

Designed as an OEM-style deep hand socket compatible with any 1/2 inch drive ratchet, torque wrench, or breaker bar. Fits 27 mm hex and double-hex fastener heads in automotive, fleet, and industrial maintenance applications.

Installation Notes

This socket is installed and removed by hand tool professionals including mechanics, millwrights, and industrial maintenance technicians. Before use, confirm the socket is fully seated on the fastener and the drive tool is properly engaged to prevent rounding. Do not use hand sockets with impact drivers unless the socket is impact-rated. Inspect the socket for cracks or wear before applying high torque loads.