Proto J4773A Hand Socket 3/8 in 6-point Chrome

Product Description

The PROTO J4773A is a 6-point hand socket designed for precise, controlled fastener work in professional trade environments. Built from alloy steel with a chrome-plated finish, it accepts a 1/4 inch drive and fits 3/8 inch fasteners. The 6-point geometry reduces contact stress on fastener flats compared to 12-point designs, making it the right choice for turning worn or tight hardware. At 1.25 inches overall length, the J4773A is compact enough for confined spaces while maintaining the rigidity needed for consistent torque transfer. This socket meets ASME B107.1 standards and is suited for mechanics, HVAC technicians, plumbers, and electricians working in tight access areas.

The J4773A is a general-purpose hand socket intended for residential and commercial service applications. Its compact 1.25 inch length makes it well-suited for close-quarter fastener work on equipment panels, junction boxes, valve assemblies, and mechanical components where longer sockets would not seat properly. It is paired with 1/4 inch drive ratchets, extensions, and flex handles. The chrome finish resists corrosion in typical shop and field conditions.

Key Features

• 6-point socket geometry reduces rounding on worn or tight fastener flats
• 3/8 inch socket size on a 1/4 inch drive for use with compact drive tools
• Alloy steel construction provides durability under repeated torque loading
• Chrome-plated finish resists corrosion and simplifies cleaning
• 1.25 inch overall length suits confined and restricted-access installations
• Meets ASME B107.1 hand socket standards

Compatibility

Designed for use with standard 1/4 inch drive ratchets, extensions, and flex handles. Fits 3/8 inch hex fasteners in residential and commercial service applications.

Installation Notes

Install and remove with a 1/4 inch drive ratchet or handle rated for the fastener torque requirements of the application. Ensure the socket is fully seated on the fastener before applying force to avoid slippage or fastener damage. Inspect the socket for cracks or wear before each use, and do not use with impact drivers unless the socket is rated for impact service.