Proto J5318H Deep Hand Socket 9/16 in 1/2 Drive 6-point

Product Description

The PROTO J5318H is a deep hand socket designed for professional hand-tool use in mechanical, electrical, and industrial service applications. Built on a 1/2 inch drive, it accepts a 9/16 inch fastener and features a 6-point internal geometry for maximum contact with hex fastener flats. The deep-length profile allows the socket to reach recessed or stud-mounted fasteners that a standard-length socket cannot access. A chrome-plated finish provides corrosion resistance and makes the tool easy to wipe clean in shop environments. This socket is sized and constructed for daily use by trade professionals working in HVAC, plumbing, electrical, and general mechanical service.

The J5318H suits a wide range of fastener-access tasks where a standard-depth socket cannot reach the workpiece — including bolt patterns on flanges, threaded studs, and deeply recessed hex fasteners encountered in mechanical and process equipment. It is compatible with any 1/2 inch square-drive ratchet, breaker bar, torque wrench, or extension bar conforming to standard 1/2 inch drive tooling. The 6-point design limits rounding on worn or corroded fastener heads compared to 12-point alternatives, making it a practical choice for service and maintenance work.

Key Features

• 9/16 inch socket size for common fastener applications in mechanical and trade service
• 1/2 inch square drive for compatibility with standard ratchets, torque wrenches, and extensions
• 6-point geometry maximizes contact on hex fastener flats and reduces rounding risk
• Deep-length profile reaches recessed fasteners and threaded studs inaccessible to standard sockets
• Chrome-plated finish resists corrosion and simplifies cleaning in shop or field use

Compatibility

Designed for use with standard 1/2 inch square-drive hand-tool systems including ratchets, breaker bars, torque wrenches, and drive extensions.

Installation Notes

Install and remove using a 1/2 inch drive ratchet or torque wrench rated for the fastener application. Ensure the socket is fully seated on the fastener before applying torque to prevent slipping or rounding. Inspect the socket and drive square for wear or cracks before use, and remove the socket from service if the drive detent or socket walls show visible damage. No power tools should be used with a hand-rated socket unless the socket is explicitly rated for impact use.