Proto J5278HAM 15mm 6-point Hand Socket 3/8 Drive

Product Description

The PROTO J5278HAM is a 15 mm, 6-point hand socket designed for use with a 3/8 inch drive ratchet or breaker bar. Manufactured from alloy steel with a chrome-plated finish, this socket provides corrosion resistance and durability in demanding shop and field environments. The 6-point design maximizes contact with fastener flats, reducing the risk of rounding hardware during high-torque applications. At 1-7/8 inches overall length, it fits into standard socket organizers and drive tool sets. Licensed trades and mechanics rely on this socket for maintenance, repair, and assembly work across a wide range of equipment types.

This socket is suited for automotive, industrial, and mechanical maintenance applications where metric fasteners are common. It works with standard 3/8 inch drive ratchets, extensions, and torque wrenches. The 15 mm size is commonly encountered on engine components, suspension hardware, and general mechanical assemblies. Suitable for professional shop use as well as field service work where a compact, reliable metric socket is required.

Key Features

• 15 mm socket size for metric fastener applications
• 6-point geometry maximizes contact on fastener flats to reduce slipping and rounding
• 3/8 inch drive compatible with standard ratchets, extensions, and torque wrenches
• Alloy steel construction for strength under high-torque use
• Chrome-plated finish resists corrosion and aids cleaning
• Meets ASME B107.5M standards for hand sockets

Compatibility

Designed for use with 3/8 inch drive hand tools including ratchets, breaker bars, extensions, and torque wrenches. Fits any standard 3/8 inch square drive system.

Installation Notes

This socket is installed and removed by hand using a compatible 3/8 inch drive tool. Ensure the drive tool and socket are fully engaged before applying torque. Inspect the socket for cracks or wear before use, and do not use impact drivers with a socket rated for hand use only. Follow applicable equipment service procedures and torque specifications provided by the equipment manufacturer.