Apex 81683 Flare Nut Wrench 5/8 X 11/16 Inch Chrome

Product Description

The APEX 81683 is a dual-size flare nut wrench designed to loosen and tighten hex nuts in confined spaces where tubing is present. Manufactured from alloy steel with a full polish chrome finish, this wrench measures 7.614 inches in length and weighs 0.39 pounds. The standard pattern body provides solid engagement on hex nut flats, reducing the risk of rounding. Plumbers, HVAC technicians, and automotive service professionals reach for flare nut wrenches when working around fuel lines, brake lines, refrigerant line fittings, and compression fittings where an open-end wrench alone may slip.

This wrench covers two sizes in a single tool — 5/8 inch on one end and 11/16 inch on the other — making it well suited for residential and light commercial service work on tubing assemblies. Common applications include tightening flare fittings on refrigerant lines, servicing compression-style water supply connections, and working on vehicle fuel and brake line connections. The compact, single-wrench format reduces the number of tools needed when working in tight access panels or under dashboards.

Key Features

• Dual-size design: 5/8 inch and 11/16 inch on a single wrench
• Alloy steel construction for durability under high torque loads
• Full polish chrome finish resists corrosion and simplifies cleaning
• Standard pattern body fits hex nuts with tubing present
• 7.614-inch length provides clearance in tight work areas
• Lightweight at 0.39 pounds for reduced hand fatigue

Compatibility

Designed for use on standard hex flare nuts where tubing restricts access, including vehicle fuel and brake line fittings, refrigerant line connections, and compression plumbing fittings.

Installation Notes

Flare nut wrenches are installed and removed by licensed HVAC technicians, plumbers, and mechanical service professionals. Always depressurize refrigerant lines or shut off water and fuel supply before breaking flare or compression fittings. Select the correct wrench size to avoid rounding the nut flats. Do not substitute an open-end wrench where a flare nut wrench is required, as tube interference can cause slippage and fitting damage.

Technical Specifications

• Wrench Sizes: 5/8 inch x 11/16 inch
• Length: 7.614 inches
• Weight: 0.39 pounds
• Material: Alloy Steel
• Finish: Full Polish Chrome
• UOM: Each
• UPC: 099575816833

Standard Information

• Brand: APEX
• Manufacturer Part Number: 81683