Proto J4918MCF Open End Crowfoot Wrench 1-5/8 Inch

Product Description

The PROTO J4918MCF is an open end crowfoot wrench designed for fastener access in tight or obstructed spaces where a standard open-end wrench cannot reach. The head measures 1-5/8 inches in diameter with a head thickness of 1/4 inch, and the overall length is 1-15/16 inches. A chrome-plated finish provides corrosion resistance for shop and field use. This crowfoot attaches to a standard 3/8-inch drive ratchet or extension, giving technicians the torque control of a ratchet with the accessibility of an open-end jaw. Plumbers, HVAC techs, and general mechanics reach for crowfoot sets when working around pipes, fittings, and confined fastener locations.

The J4918MCF suits residential and commercial service work where fasteners are partially blocked by adjacent components, piping, or structural elements. It is a common addition to HVAC technician and plumber tool kits for tightening or loosening flare fittings, packing nuts, and other hardware in close quarters. Manufactured to ASME B107.21 and Federal Specification GGG-C-1507b, it meets recognized dimensional and performance standards for professional hand tools.

Key Features

• Open end crowfoot design fits onto 3/8-inch drive ratchets and extensions for torque application in restricted spaces
• 1-5/8 inch head diameter with a slim 1/4 inch head thickness for low-clearance access
• Chrome-plated finish resists corrosion in shop and field environments
• Meets ASME B107.21 and Federal Spec GGG-C-1507b standards
• Compact 1-15/16 inch overall length minimizes obstruction in tight work areas
• Backed by a Limited Lifetime Warranty

Compatibility

Designed as an open end crowfoot wrench for use with standard 3/8-inch drive ratchets and extensions in professional trade applications.

Installation Notes

Installation and removal of this tool does not require power shutdown, but always de-energize or depressurize the system being serviced before applying torque to fittings or fasteners. Align the crowfoot head squarely on the fastener before applying force to avoid rounding. When used with a torque wrench, account for any offset angle between the crowfoot and the torque wrench centerline per standard torque correction practices.