Proto J4922MCF Open End Crowfoot Wrench Metric

Product Description

The PROTO J4922MCF is an open end crowfoot wrench designed for use with a ratchet or breaker bar via a standard square drive connection. The head measures 1-23/32 inches in diameter and 1/4 inch thick, with an overall length of 2-7/32 inches. The chrome-plated finish provides corrosion resistance in shop and field environments. This wrench is built to ASME B107.21 and Federal Specification GGG-C-1507b standards, making it a spec-compliant choice for government, industrial, and commercial work. Mechanics, pipefitters, and maintenance technicians reach for crowfoot wrenches when a standard open end wrench cannot clear a fastener due to clearance or depth restrictions.

Open end crowfoot wrenches are used in tight or recessed spaces where a conventional box or combination wrench cannot seat properly. Common applications include hydraulic fittings, fuel line connections, sensor ports, and fasteners in confined engine or equipment bays. The J4922MCF follows metric measurement standards and suits professional technicians working on metric-dimensioned equipment in automotive, industrial, and mechanical maintenance settings.

Key Features

• Chrome-plated finish resists corrosion and allows for easy cleaning
• Head diameter of 1-23/32 inches with a slim 1/4 inch head thickness for use in tight clearance areas
• Overall length of 2-7/32 inches for compact reach
• Meets ASME B107.21 and Federal Specification GGG-C-1507b standards
• Metric system of measurement for use with metric fasteners and fittings
• Backed by a limited lifetime warranty

Compatibility

Designed as an OEM-style replacement or addition to professional crowfoot wrench sets requiring a metric open end crowfoot in the 1-23/32 inch head diameter range.

Installation Notes

Install using a compatible square drive ratchet or breaker bar. Always ensure the drive tool is rated for the torque being applied before use. De-energize or depressurize any system before accessing fasteners or fittings with this tool. Inspect the chrome finish and drive engagement points before each use and remove from service if wear or cracking is observed.