Proto J5527M 27mm 3/4 Drive 12-point Hand Socket

Product Description

The PROTO J5527M is a 27 mm, 12-point hand socket built for professional fastener work across mechanical, industrial, and heavy-equipment service environments. It features a 3/4 inch drive and a standard-length profile, making it suitable for most bench and in-field torquing tasks. The satin finish reduces glare and provides moderate corrosion resistance during regular shop use. Weighing 0.62 pounds and measuring 2.2 inches in length, this socket is a straightforward, durable tool for licensed mechanics and trade professionals who need consistent, reliable performance on larger fasteners.

This socket is well suited for use in automotive, fleet maintenance, heavy equipment, and industrial assembly applications where 27 mm fastener heads are common. The 12-point configuration allows the socket to engage the fastener from multiple angles, giving the technician flexibility in tight or awkward access situations. The 3/4 inch drive sizing targets mid-to-high torque applications where a 1/2 inch drive setup would be undersized. It is packaged as a single unit and sold individually.

Key Features

• 27 mm socket size for use on metric fasteners in the mid-to-large range
• 3/4 inch drive for high-torque wrench and breaker bar compatibility
• 12-point design allows engagement at 30-degree intervals for better access in confined spaces
• Standard-length profile suitable for general-purpose fastener work
• Satin finish provides glare reduction and light corrosion resistance
• Compact at 0.62 pounds and 2.2 inches in length for easy handling

Compatibility

Designed as an OEM-style replacement or direct-use hand socket compatible with standard 3/4 inch drive ratchets, breaker bars, and torque wrenches using a 3/4 inch drive interface.

Installation Notes

This socket is installed by hand by qualified mechanics and maintenance technicians. Before use, confirm the drive interface is fully seated and the fastener head is clean and undamaged. Follow applicable torque specifications for the equipment being serviced, and use a calibrated torque wrench where precision is required. Do not use hand sockets with impact drivers unless the socket is rated for impact use.