Proto J5228 Hand Socket 7/8 in 3/8 Drive 12-point

Product Description

The PROTO J5228 is a 7/8 inch, 12-point hand socket built for professional-grade fastener work in mechanical, industrial, and maintenance applications. Manufactured from alloy steel with a chrome-plated finish, this standard-length socket measures 1-5/16 inches overall and fits a 3/8 inch drive. The 12-point design allows engagement at 30-degree increments, giving technicians more positioning options in tight spaces. Licensed tradespeople and experienced mechanics rely on this socket for consistent torque transfer on hex fasteners where access or swing angle is limited. It meets ASME B107.110-2012 and AS4984A standards.

The J5228 is suited for residential and commercial maintenance, automotive service, HVAC equipment installation, and general mechanical assembly. The 3/8 inch drive makes it compatible with mid-range ratchets, breaker bars, and torque wrenches commonly used by plumbers, HVAC technicians, electricians, and general mechanics. Its standard length profile fits well in most toolboxes and drive sets targeting 7/8 inch fastener applications. The chrome finish resists corrosion and makes cleanup straightforward in shop environments.

Key Features

• 7/8 inch socket size for common fastener applications across multiple trades
• 12-point design allows 30-degree engagement increments for use in restricted access areas
• 3/8 inch drive fits standard mid-range ratchets, torque wrenches, and breaker bars
• Alloy steel construction for durability under repeated torque loading
• Chrome-plated finish resists corrosion and simplifies cleaning
• Meets ASME B107.110-2012 and AS4984A standards

Compatibility

Designed as a standard 3/8 inch drive hand socket compatible with 3/8 inch drive ratchets, extensions, and torque wrenches accepting 7/8 inch fasteners.

Installation Notes

Installed and used by mechanics, HVAC technicians, plumbers, and electricians working on bolted connections. Ensure the drive tool is fully seated before applying torque to prevent slippage or rounding of the fastener. Do not use impact drivers with this hand socket unless the socket is impact-rated. Inspect the socket for cracks or wear before each use.