Proto J49903/16XL Hand Hex Bit Socket 3/8 in Drive 3/16 in Hex

Product Description

The PROTO J49903/16XL is a long hand hex bit socket designed for manual drive applications requiring extended reach. It accepts a 3/8 inch square drive and features a 3/16 inch (4.76 mm) hex bit. The overall length measures 6-3/32 inches, with a 5 inch bit length, making it well suited for fastener locations that are recessed or obstructed. This socket is used by HVAC technicians, plumbers, electricians, and general maintenance mechanics who need reliable hex drive engagement in confined spaces. The long-series design reduces the need for extensions in many service scenarios.

This hex bit socket fits standard 3/8 inch drive ratchets and handles. It is appropriate for residential and light commercial maintenance tasks where 3/16 inch hex fasteners are common, including equipment panels, access covers, and mechanical assemblies. The long overall length makes it a practical choice when standard-length sockets cannot reach the fastener without additional tooling.

Key Features

• 3/8 inch square drive for use with standard ratchets and breaker bars
• 3/16 inch hex bit size, equivalent to 4.76 mm
• 5 inch bit length for extended reach into recessed fastener locations
• 6-3/32 inch overall length — long-series designation
• Single-piece hex bit socket construction for direct drive engagement

Compatibility

Designed for use with 3/8 inch drive ratchets, torque wrenches, and drive handles requiring a 3/16 inch hex bit socket in a long-series configuration.

Installation Notes

Install and remove with any standard 3/8 inch square drive tool. Ensure the hex bit is fully seated in the fastener recess before applying torque to avoid rounding the fastener. Inspect the bit end for wear before use on fasteners with tight torque requirements. No power shutoff is required for tool use, but follow applicable lockout/tagout procedures when servicing energized or pressurized equipment.