Proto J4772TA 5/16 Inch 12-point Universal Flex Hand Socket

Product Description

The PROTO J4772TA is a 5/16 inch, 12-point universal flex hand socket designed for professional hand-tool use in tight or angled fastener access situations. Built from alloy steel with a chrome finish, this socket features a universal/flex-style design that allows the socket head to pivot relative to the drive, enabling engagement on fasteners that a rigid socket cannot reach cleanly. It accepts a 1/4 inch drive and measures 1.25 inches in overall length. Licensed tradespeople and mechanics across HVAC, plumbing, electrical, and general mechanical service will find this socket useful wherever limited clearance requires an angled approach.

This socket is suited for residential and light commercial service work where 5/16 inch fasteners appear in confined spaces, such as equipment panels, cabinet interiors, and structural brackets. The flex joint allows the drive and socket to operate at an offset angle, reducing the need to reposition the fastener or the tool. At 0.04 pounds, it is light enough for a standard socket tray or pouch without adding bulk to a service kit.

Key Features

• Universal/flex socket type allows angled drive engagement for confined-space access
• 12-point design provides more contact positions per revolution for use in tight swing arcs
• Alloy steel construction with chrome finish for corrosion resistance and durability
• 1/4 inch drive fits standard 1/4 inch ratchets, extensions, and adapters
• 1.25 inch overall length keeps the profile compact
• Meets ASME B107.1 standards for hand socket tools

Compatibility

Designed for use with standard 1/4 inch drive ratchets, extensions, and speed handles. Fits 5/16 inch fasteners in universal/flex-drive applications. Not tether capable.

Installation Notes

Installation and removal of fasteners should be performed by a qualified technician following applicable trade and safety codes. Ensure the socket is fully seated on the fastener before applying torque to prevent rounding. Do not use hand sockets with impact drivers unless the socket is rated for impact use. Inspect the flex joint for wear or deformation before each use and replace the socket if the joint shows looseness beyond normal pivot range.