Proto J5216M 16mm 3/8 Drive 12-pt Chrome Hand Socket

Product Description

The PROTO J5216M is a 16 mm, 12-point hand socket with a 3/8-inch drive, built to ASME B107.5 standards and finished in chrome plating. Designed for standard-length service work, this socket delivers reliable torque transfer on hex fasteners in automotive, mechanical, and industrial repair environments. The 12-point configuration allows engagement at 30-degree increments, giving technicians more positional flexibility in tight-access situations. Chrome plating provides corrosion resistance and makes the socket easy to clean after use. This is a single-piece unit intended for professional hand-tool applications.

The J5216M is suited for general mechanical service tasks involving metric fasteners. Typical applications include engine and drivetrain work, equipment maintenance, and structural fastener removal where a 3/8-inch drive ratchet or breaker bar is the appropriate tool. The standard length profile fits most open-access fastener locations without the added reach of a deep socket. It is commonly used by automotive technicians, industrial maintenance mechanics, and heavy equipment service professionals.

Key Features

• 16 mm socket size for metric fastener applications
• 3/8-inch drive compatible with standard ratchets, extensions, and torque wrenches
• 12-point design allows 30-degree engagement increments for tighter working spaces
• Chrome plating finish for corrosion resistance and easy cleanup
• Meets ASME B107.5 standards for hand socket tools
• Standard length profile suits most general-access fastener locations

Compatibility

Designed for use with 3/8-inch drive ratchets, torque wrenches, and extensions as an OEM-style hand socket for metric fastener service.

Installation Notes

Installation and removal of fasteners with this socket should be performed by a qualified mechanic or maintenance technician. Always ensure the drive connection is fully seated before applying torque. De-energize or power down any equipment and relieve stored mechanical or hydraulic pressure before accessing fasteners in live systems. Inspect the socket for cracks or wear before each use and replace if damage is found.