Gibraltar 41609G Flange Nut 1-8 Thread 2 Inch 12L14 Steel

Product Description

The GIBRALTAR 41609G is a heavy-duty flange nut engineered for threaded fastener applications requiring a built-in load-distributing flange. It features a 1-8 thread size, a 2-inch flange diameter, and stands 1.25 inches high with 1.625 inches across the flats. Manufactured from Grade 12L14 steel with a black oxide finish, this nut resists corrosion and provides consistent torque performance. The 0.25-inch flange height spreads clamping load over a wider bearing surface, reducing the need for a separate washer in many standard assembly configurations. Meets TCMAI fastener standards.

This flange nut is suited for mechanical assemblies, industrial equipment, HVAC structural mounting, plumbing fixture support, and general trade fabrication work where a large-flange hex nut is specified. Its coarse 1-8 thread pitch is common in structural and equipment attachment points. The black oxide finish makes it appropriate for both indoor mechanical assemblies and lightly protected outdoor service conditions. Trade professionals including HVAC technicians, pipefitters, and maintenance mechanics will encounter this fastener in equipment mounting and structural framing applications.

Key Features

• 1-8 coarse thread size for high-strength structural and mechanical fastening
• 2-inch flange diameter distributes clamping load, reducing surface stress without a separate washer
• Grade 12L14 steel construction provides reliable machinability and consistent dimensional tolerance
• Black oxide finish offers mild corrosion resistance and reduces galling during installation
• Meets TCMAI fastener standard for dimensional and material compliance
• Compact 1.25-inch height with 1.625-inch across-flats measurement for standard wrench sizing

Compatibility

Designed as an OEM-style replacement or service fastener compatible with any 1-8 threaded bolt or stud application requiring a flanged hex nut in inch measurement systems.

Installation Notes

Installation should be performed by qualified mechanical, HVAC, or plumbing tradespeople using a standard open-end, box-end, or socket wrench sized to 1.625 inches across flats. Disengage all power and relieve system pressure before removing or replacing fasteners on live equipment. Do not use this nut as a substitute for a specified locking nut or prevailing-torque nut without engineering approval. Fastener torque values should be sourced from the equipment manufacturer's service documentation.