Proto J5544HL Deep Hand Socket 1-3/8 in 3/4 Drive 6-point

Product Description

The PROTO J5544HL is a deep hand socket designed for heavy-duty fastener work requiring extended reach. Built from alloy steel with a satin finish, it accepts a 3/4 inch drive and fits a 1-3/8 inch fastener head using a 6-point contact pattern. The 6-point design distributes torque evenly across the flats of the fastener, reducing the risk of rounding corners under high load. At 3.5 inches overall length, it provides the clearance needed to reach recessed or deeply set fasteners in mechanical assemblies. This socket meets ASME B107.110-2012 standards and is suited for use by mechanics, millwrights, and industrial maintenance technicians working on heavy equipment, structural fasteners, and large-diameter bolt applications.

The J5544HL is appropriate for industrial maintenance, heavy equipment repair, and structural assembly work where standard-length sockets cannot reach deeply set fasteners. Its 3/4 inch drive size makes it compatible with mid- to large-size drive tools commonly used in commercial and industrial settings. The satin finish reduces glare and provides corrosion resistance in typical shop environments. This socket is used as a hand tool and is not rated for tethered tool applications.

Key Features

• 1-3/8 inch socket size fits large-diameter fasteners common in heavy equipment and structural work
• 3/4 inch drive accepts standard mid-to-large drive ratchets, breaker bars, and torque wrenches
• 6-point contact pattern reduces fastener rounding under high torque
• Deep length at 3.5 inches overall provides reach into recessed fastener locations
• Alloy steel construction with satin finish for durability and corrosion resistance
• Meets ASME B107.110-2012 standards for hand socket tools

Compatibility

Designed for use with 3/4 inch drive ratchets, breaker bars, and torque wrenches in industrial and heavy-duty hand tool applications requiring a deep 1-3/8 inch 6-point socket.

Installation Notes

This socket is installed by hand tool professionals including mechanics, millwrights, and maintenance technicians. Ensure the drive tool is fully seated in the socket before applying torque to prevent drive slip or socket damage. Do not use with impact drivers, as this socket is rated for hand tool use only. Inspect the socket for cracks or deformation before each use and replace if any damage is present.