Apex 81911D Flex Head Flare Nut Wrench Set Chrome

Product Description

The APEX 81911D is a flex head flare nut wrench set designed for loosening and tightening hex nuts in confined or line-obstructed applications. Built from alloy steel with a full polish chrome finish, these wrenches are engineered for durability and corrosion resistance in demanding shop and field environments. Each wrench in the set carries two sizes, reducing the total number of tools needed in a service bag or toolbox. The flex head design allows the working end to pivot, giving technicians better access in tight quarters such as fuel lines, brake lines, and refrigerant fittings.

This wrench set is suited for automotive, HVAC, and plumbing service work where tubing or lines run through or alongside hex nuts. The flare nut profile surrounds more of the fastener than an open-end wrench, reducing the risk of rounding soft fittings. The flex head adds reach and angle options that a fixed-head wrench cannot provide. These tools are typically used by HVAC technicians working refrigerant line sets, plumbers working compression or flare fittings, and automotive technicians servicing fuel and brake lines.

Key Features

• Flex head design pivots for access in tight or angled installations
• Flare nut profile engages more fastener faces than a standard open-end wrench
• Two sizes per wrench reduces toolbox clutter and kit footprint
• Alloy steel construction for strength under torque
• Full polish chrome finish resists corrosion and cleans easily

Compatibility

Designed as a general-purpose flare nut wrench set for use on hex nuts where tubing or lines are present, including fuel lines, brake lines, and refrigerant fittings in automotive, HVAC, and plumbing applications.

Installation Notes

Flare nut wrenches should be installed fully over the fitting before applying torque to avoid slipping and rounding the fastener. Always shut off the relevant fluid or refrigerant system and relieve pressure before breaking any line fitting. These tools are hand tools requiring no power source, but work should follow applicable codes such as SAE, NEC, or IFGC depending on the system being serviced. Inspect the chrome finish before each use and retire any wrench showing cracks or corrosion that could compromise grip on the fastener.

Technical Specifications

• Material: Alloy Steel
• Finish: Full Polish Chrome
• Head Type: Flex Head
• Wrench Type: Flare Nut
• Weight: 3.47 pounds

Standard Information

• Brand: APEX
• Manufacturer Part Number: 81911D