Gibraltar 41701G Flange Nut 1/4-28 5/8 Inch Black Oxide

Product Description

The GIBRALTAR 41701G is a flange nut machined from Grade 12L14 steel with a black oxide finish, designed for use in mechanical assemblies where a built-in bearing flange distributes clamping load across a wider surface area than a standard hex nut. The 1/4-28 thread pitch indicates a fine-thread fastener suitable for applications requiring precise torque control and vibration resistance. The integrated flange measures 5/8 inch in diameter and 3/32 inch in height. Overall nut height is 5/16 inch, and the width across flats is 1/2 inch. The black oxide finish provides mild corrosion resistance and reduces light reflection in service environments.

This flange nut is appropriate for light mechanical assemblies in HVAC equipment, electrical enclosures, plumbing fixtures, and general trade fabrication where a 1/4-28 fine-thread fastener with a flanged bearing surface is specified. It is an inch-system fastener conforming to TCMAI standards and is suited for use by HVAC technicians, electricians, plumbers, and mechanical contractors working on equipment requiring secure, vibration-resistant fastening without a separate washer.

Key Features

• Grade 12L14 steel construction for consistent machinability and dimensional accuracy
• Black oxide finish provides mild corrosion resistance and a low-reflectance surface
• Integrated 5/8 inch diameter flange distributes load and eliminates the need for a separate flat washer
• Fine 1/4-28 thread pitch improves resistance to loosening under vibration
• TCMAI standard compliance for use in specified mechanical assemblies
• Compact 5/16 inch height suits confined fastening locations

Compatibility

Designed as a standard inch-system flange nut for mechanical assemblies requiring a 1/4-28 fine-thread fastener with an integrated bearing flange.

Installation Notes

Installation is appropriate for mechanical, HVAC, electrical, and plumbing tradespeople working on light equipment assemblies. De-energize any electrical equipment and relieve system pressure before servicing fastened components. Use a 1/2 inch wrench or socket to seat the nut; the flange face should seat flush against the mating surface. Grade 12L14 steel is a leaded free-machining grade and is not recommended for welding.