Proto J77416MP Impact Socket 3/8 in Drive 16mm 6-pt

Product Description

The PROTO J77416MP is a 6-point impact socket designed for heavy-duty fastening applications in professional trade environments. Built from alloy steel, it accepts a 3/8 inch drive and fits 16mm hex fasteners. The overall length measures 2-3/32 inches, keeping the profile compact for work in tighter spaces. This socket meets ASME B107.2 specifications, confirming dimensional and performance standards expected in industrial and mechanical service work. Electricians, HVAC technicians, plumbers, and general mechanical contractors reach for this socket when impact driver torque is required on metric fasteners.

The J77416MP is suited for residential and commercial service work where a 16mm metric fastener is common. Typical applications include equipment mounting hardware, mechanical room installations, motor and compressor service, and structural fastener work. The 6-point contact geometry reduces fastener rounding compared to 12-point profiles, making it a preferred choice when working with worn or tight fasteners on mechanical equipment.

Key Features

• 6-point drive geometry reduces rounding on metric fasteners under impact torque
• Alloy steel construction rated for use with impact drivers and impact wrenches
• Meets ASME B107.2 dimensional and performance standard
• 3/8 inch square drive fits standard impact drivers and ratchets
• Compact 2-3/32 inch overall length for access in confined spaces

Compatibility

Designed as an OEM-style impact socket for use with 3/8 inch drive impact wrenches, ratchets, and extension sets requiring a 16mm 6-point metric socket.

Installation Notes

Install and remove with a 3/8 inch drive impact wrench or hand ratchet. Confirm the socket is fully seated on the fastener before applying torque to prevent slippage or fastener damage. Inspect the socket for cracks or deformation before each use and remove from service if wear is visible. Follow applicable workplace safety standards when operating pneumatic or electric impact tools.