Proto J4988CF Open End Crowfoot Wrench 2-3/4 in

Product Description

The PROTO J4988CF is an open end crowfoot wrench designed for use with standard 1/2-inch drive torque wrenches and extension bars. It provides access to fasteners in tight or recessed spaces where a conventional open-end wrench cannot reach. The wrench head measures 4.78 inches in diameter with a head thickness of 0.5 inches, and the 2-3/4-inch wrench size suits larger fasteners common in heavy equipment, plumbing, and industrial applications. A chrome-plated finish resists corrosion and simplifies cleanup after use. Licensed mechanics, pipefitters, and maintenance technicians are the primary users of this tool.

This crowfoot wrench is suited for automotive, industrial, and mechanical maintenance work where fastener access is restricted by surrounding components or structure. It fits onto a 1/2-inch square drive torque wrench or ratchet extension, making it practical for controlled-torque applications on hydraulic fittings, large hex fasteners, and plumbing connections in confined bays or equipment panels.

Key Features

• 2-3/4-inch open end size for large-format fasteners
• Head diameter of 4.78 inches for full engagement on the fastener flats
• Head thickness of 0.5 inches allows entry into shallow or recessed fastener locations
• Chrome-plated finish for corrosion resistance and surface durability
• Lifetime warranty coverage from the manufacturer
• Inch measurement system; compatible with standard 1/2-inch drive tooling

Compatibility

Designed for use with standard 1/2-inch square drive torque wrenches, ratchets, and extension bars. Fits 2-3/4-inch hex fasteners in inch-measurement applications.

Installation Notes

Crowfoot wrenches are installed by mechanical and maintenance technicians working on fasteners in restricted-access locations. Verify the square drive size of your torque wrench or extension matches the 1/2-inch drive requirement before use. Apply force in line with the torque wrench to minimize angular offset error when torquing to specification. Keep the wrench and drive connection free of oil or debris to prevent slippage during use.