Gibraltar 41703G Flange Nut 3/8-24 Black Oxide Steel

Product Description

The GIBRALTAR 41703G is a 3/8-24 threaded flange nut machined from Grade 12L14 steel with a black oxide finish. The integrated flange distributes clamping load across a wider surface area, reducing the need for a separate washer in many installations. The nut stands 0.5 inches tall with a flange height of 0.125 inches, a flange diameter of 0.875 inches, and measures 0.6875 inches across the flats. Weighing 0.06 pounds, this fastener meets TCMAI standards and is suited for mechanical assemblies, equipment fabrication, and general industrial fastening tasks handled by millwrights, HVAC technicians, plumbers, and electricians.

This flange nut is used wherever a 3/8-24 unified fine thread fastener is required and a larger bearing surface is beneficial. Typical applications include equipment panel mounting, bracket fastening, and structural assembly in residential and commercial mechanical systems. The black oxide finish provides a moderate level of corrosion resistance and reduces light reflection in finished assemblies. It is sold individually and is appropriate for low-volume maintenance use as well as shop stock replenishment.

Key Features

• Grade 12L14 steel construction for consistent machinability and reliable thread engagement
• Black oxide finish for moderate corrosion resistance and clean appearance
• Integrated flange eliminates the need for a separate flat washer in most applications
• 3/8-24 unified fine thread for precise clamping and vibration resistance
• Meets TCMAI fastener standards
• Compact profile at 0.5 inches tall with 0.6875 inches across the flats for standard wrench fitment

Compatibility

Designed as a standard 3/8-24 unified fine thread flange nut suitable for use in mechanical assemblies, equipment fabrication, and trade installations requiring an inch-series fine thread fastener with an integrated bearing flange.

Installation Notes

Installation is performed with a standard open-end or box wrench sized for 0.6875 inches across the flats. De-energize or shut off equipment before working on any fastened assembly in live mechanical or electrical systems. Do not exceed the torque capacity appropriate for Grade 12L14 steel at this thread size as referenced in current fastener engineering tables. Inspect threads for damage or contamination before installation to ensure full thread engagement.