Proto J5344H Deep Hand Socket 1-3/8 in 6-point 1/2 in Drive

Product Description

The PROTO J5344H is a deep hand socket designed for professional fastener work requiring extended reach and reliable torque transfer. Built from alloy steel with a chrome finish, this 6-point socket accepts a 1/2-inch drive and fits a 1-3/8-inch fastener. The 6-point geometry distributes load evenly across the hex faces, reducing the risk of rounding fasteners under heavy torque. With an overall length of 3.5 inches, it provides the depth needed to engage recessed nuts and bolts in confined spaces. Licensed trades and mechanical service professionals rely on this configuration for automotive, industrial, and heavy equipment applications.

This socket is suited for residential and commercial maintenance work, fleet service, HVAC equipment installation, and industrial assembly where 1-3/8-inch fasteners are found in hard-to-reach locations. The deep-length design accommodates threaded studs and extended bolt shafts that standard-length sockets cannot fully seat on. It meets AS4984A and ASME B107.110-2012 standards, making it appropriate for shops and job sites requiring documented tool compliance.

Key Features

• 6-point socket geometry reduces fastener rounding under high torque
• Deep length at 3.5 inches overall to reach recessed or stud-mounted fasteners
• Alloy steel construction for strength and durability under repeated use
• Chrome finish resists corrosion and simplifies cleaning
• Meets AS4984A and ASME B107.110-2012 standards
• 1/2-inch drive compatible with standard drive tools and torque wrenches

Compatibility

Designed for use with 1/2-inch drive ratchets, breaker bars, torque wrenches, and impact-rated extensions where non-impact use is intended. Fits 1-3/8-inch 6-point fasteners in deep or recessed applications.

Installation Notes

This socket is installed by licensed mechanics, HVAC technicians, plumbers, and electricians using standard 1/2-inch drive tooling. Always confirm the fastener size before applying torque to avoid socket or fastener damage. Ensure the drive tool and socket are fully engaged before applying load. This socket is rated for hand-tool use and is not designated as tether-capable, so follow applicable jobsite drop-prevention protocols when working at elevation.