Proto J5528HL Deep Hand Socket 7/8 Inch 6-point

Product Description

The PROTO J5528HL is a deep hand socket designed for 3/4 inch drive ratchets and breaker bars. Built from alloy steel with a chrome-plated finish, it accepts 7/8 inch fasteners and features a 6-point contact geometry that reduces rounding on hex fasteners under high torque. The extended 3.5 inch overall length provides clearance to reach recessed or studdedbolts that standard-depth sockets cannot access. This socket meets ASME B107.110-2012 standards and is suited for professional hand-tool use in mechanical, industrial, and maintenance applications.

The J5528HL is used wherever a 7/8 inch hex fastener is recessed below a surface or sits on a long stud, making a deep-length socket the correct tool for the job. Typical applications include heavy equipment maintenance, industrial assembly, fleet service, and structural fastener work. The 3/4 inch drive sizing places this socket in the heavy-duty range, pairing with 3/4 inch drive torque wrenches, ratchets, and extensions commonly found in commercial shops and field service rigs.

Key Features

• 6-point socket geometry minimizes fastener rounding under high torque loads
• Deep-length design at 3.5 inches overall reaches recessed and studded fasteners
• 3/4 inch drive compatible with heavy-duty ratchets, breaker bars, and torque wrenches
• Alloy steel construction rated for demanding professional use
• Chrome-plated finish resists corrosion and simplifies cleaning
• Meets ASME B107.110-2012 hand socket standard

Compatibility

Designed for use with 3/4 inch drive hand tools. Fits any standard 3/4 inch drive square detent ratchet, breaker bar, extension, or torque wrench accepting a 7/8 inch hex fastener.

Installation Notes

This socket is intended for use by mechanics and maintenance technicians working with 3/4 inch drive hand tools. Ensure the socket is fully seated on the fastener before applying torque to prevent slippage. Do not use hand sockets with impact drivers unless the socket is rated for impact use. Inspect the socket and drive square for wear or cracks before each use.