Value Collection 76NR Serrated Flange Nut 3/4-16 Zinc-plated

Product Description

The VALUE COLLECTION 76NR is a serrated flange nut designed for high-clamping applications where a washer-face bearing surface and vibration resistance are required in a single fastener. Built from Grade 2 steel with a zinc-plated finish, this nut features an integrated serrated flange that bites into the mating surface to resist loosening under load. The 3/4-16 thread size suits fine-thread assemblies common in mechanical, HVAC equipment frames, and plumbing system supports. The flange diameter measures 1.5 inches maximum, and the nut height measures 0.675 inches maximum. Hardness is rated Rockwell HR15N 78-90, confirming consistent mechanical performance across the lot.

This serrated flange nut is used wherever a load-distributing, vibration-resistant fastener is needed without a separate washer. Typical applications include mechanical equipment mounting, structural bracketing in HVAC and plumbing installations, and general industrial assembly requiring an inch-series fine thread. The zinc-plated finish provides basic corrosion resistance suitable for indoor and protected outdoor environments. The minimum order quantity for this SKU is 10 units, making it appropriate for shop stock or service vehicle inventory replenishment.

Key Features

• Serrated flange eliminates need for a separate lock washer and resists loosening under vibration
• Grade 2 steel construction rated Rockwell HR15N 78-90 hardness
• Zinc-plated finish for basic corrosion protection in indoor and sheltered environments
• 3/4-16 fine thread for precise clamping force in mechanical assemblies
• Flange diameter spans 1.46 to 1.5 inches for consistent bearing surface coverage
• Inch system of measurement — compatible with standard SAE tooling

Compatibility

Designed as an OEM-style replacement or stock fastener for inch-series mechanical assemblies requiring a 3/4-16 fine-thread serrated flange nut in Grade 2 steel.

Installation Notes

Installation is typically performed by millwrights, HVAC technicians, plumbers, or general mechanical trades using a standard 1-1/8 inch wrench or socket. De-energize or shut down any equipment before fastener service to prevent injury. Do not mix inch-series and metric fasteners in the same joint. Inspect mating threads for damage before installation to ensure full thread engagement and proper clamp load.