Proto J5342CF Open End Crowfoot Wrench 1-5/16 in

Product Description

The PROTO J5342CF is an open end crowfoot wrench designed for 1-5/16 inch fasteners in tight spaces where a standard open-end wrench cannot reach. It accepts a 3/8 inch drive ratchet or extension, allowing torque application in confined areas common in HVAC, plumbing, and mechanical service work. The head measures 2-19/32 inches in diameter and 3/8 inches thick, keeping the profile low for restricted-clearance applications. A chrome-plated finish resists corrosion and makes cleanup fast in shop and field environments. At 0.48 pounds, the tool is light enough for overhead or awkward-angle work without fatigue.

The J5342CF is suited for professional tradespeople who regularly encounter fasteners behind brackets, near panels, or along pipe runs where swing clearance is limited. HVAC technicians use crowfoot wrenches on refrigerant line fittings, service valves, and compressor hardware. Plumbers and pipefitters reach for them on supply-line nuts and valve packing nuts in tight cabinet or chase installations. The inch-measurement sizing and 3/8 inch drive compatibility make it a natural fit in standard tool kits used across mechanical trades.

Key Features

• 1-5/16 inch open end size for direct fastener engagement without slippage
• 3/8 inch drive connection works with standard ratchets, extensions, and torque wrenches
• Low-profile head at 3/8 inches thick clears obstructions in confined spaces
• Chrome-plated finish provides corrosion resistance and easy surface cleaning
• Lifetime warranty coverage from the manufacturer
• Lightweight at 0.48 pounds for reduced fatigue during extended service work

Compatibility

Designed as an OEM-style open end crowfoot for use with any standard 3/8 inch drive ratchet, breaker bar, or torque wrench. Sized in the inch measurement system for 1-5/16 inch fasteners common in mechanical, HVAC, plumbing, and general industrial applications.

Installation Notes

A licensed HVAC technician, plumber, or qualified mechanic should select the correct crowfoot size before applying torque to avoid rounding fastener flats. Always ensure the crowfoot is fully seated on the fastener and the drive connection is secure before applying force. When used with a torque wrench, account for any angle offset between the wrench and crowfoot to maintain accurate torque readings. Follow applicable trade codes and manufacturer service procedures for the equipment being serviced.