Proto J5552HL Deep Hand Socket 1-5/8 in 3/4 Drive 6-point

Product Description

The PROTO J5552HL is a deep hand socket designed for heavy-duty fastener work requiring extended reach. Built from alloy steel with a satin finish, this 6-point socket accepts a 3/4 inch drive and fits a 1-5/8 inch fastener. The deep length profile — 3.5 inches overall — provides clearance for recessed or protruding fastener heads that standard-length sockets cannot reach. Manufactured to ASME B107.110-2012 standards, it is suited for professional mechanics, millwrights, pipefitters, and industrial maintenance technicians working on large-diameter fasteners in demanding environments.

This socket is appropriate for use in industrial, commercial, and heavy equipment maintenance applications where 3/4 inch drive tools are standard. The 6-point geometry reduces fastener rounding under high torque by distributing contact force across flat sides rather than corners. It is commonly used with 3/4 inch drive breaker bars, torque wrenches, and impact-rated ratchets in shop and field settings. The deep length makes it especially useful for wheel studs, conduit fittings, structural bolts, and similar recessed fastener applications.

Key Features

• 1-5/8 inch socket size fits large-diameter fasteners common in heavy equipment and industrial assemblies
• 3/4 inch drive compatible with standard heavy-duty drive tools
• 6-point contact geometry reduces risk of rounding fastener flats under high torque
• Deep length at 3.5 inches overall provides reach for recessed or extended fastener heads
• Alloy steel construction with satin finish resists corrosion and withstands high-torque applications
• Meets ASME B107.110-2012 dimensional and performance standards

Compatibility

Designed for use with 3/4 inch drive hand tools including ratchets, breaker bars, and torque wrenches. Fits 1-5/8 inch 6-point fasteners in industrial, mechanical, and maintenance applications.

Installation Notes

Install and remove using a 3/4 inch drive ratchet, breaker bar, or torque wrench rated for the application. Always confirm the socket is fully seated on the fastener before applying torque. This socket is not tether capable and should be secured against drop hazards when working at height. De-energize or lock out equipment per applicable OSHA and facility safety procedures before servicing fastened assemblies.