Proto J5018B Deep Hand Socket 9/16 in 3/8 Drive 12-point

Product Description

The PROTO J5018B is a deep hand socket designed for professional mechanical and industrial applications. Built to fit a 9/16 inch fastener with a 3/8 inch square drive, this socket features a 12-point configuration for maximum contact on hex fasteners. The alloy steel construction and black oxide finish deliver corrosion resistance and durability under repeated use. At 2-1/8 inches overall length, the deep profile allows access to recessed fasteners and extended studs that standard-depth sockets cannot reach. It meets ANSI B107.1 standards and carries a limited lifetime warranty.

This socket is suited for use in automotive, HVAC equipment, and general mechanical service where recessed or deeply seated fasteners are common. The 3/8 inch drive interface is compatible with standard 3/8 inch ratchets, breaker bars, and extensions. The 12-point geometry is well suited to work in tight quarters where swing arc is limited. Licensed mechanics, HVAC technicians, and maintenance professionals will find this socket useful across a wide range of service tasks involving 9/16 inch fasteners.

Key Features

• 9/16 inch socket size for standard SAE fasteners
• 3/8 inch drive compatible with common ratchets and extensions
• 12-point design for engagement in restricted-swing applications
• Deep profile at 2-1/8 inches overall length for recessed fastener access
• Alloy steel construction meets ANSI B107.1 standards
• Black oxide finish for corrosion resistance
• Limited lifetime warranty

Compatibility

Designed as a direct-fit replacement or supplemental deep hand socket for use with standard 3/8 inch drive ratchets, extensions, and torque wrenches in professional and trade service applications.

Installation Notes

Install and remove with a properly rated 3/8 inch drive ratchet or torque wrench. Ensure the socket is fully seated on the fastener before applying torque to prevent rounding. Do not use impact drivers with this hand socket unless the tool is rated for impact use. Inspect for cracks or deformation before each use and replace if any damage is found.