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The VALUE COLLECTION 39614 is a 7/16-20 UNF hex nut manufactured from Grade 8 steel with a zinc yellow dichromate finish. Grade 8 steel provides high tensile strength suitable for heavy-duty fastening applications where standard hardware-grade nuts would be insufficient. The yellow dichromate coating adds corrosion resistance and is visually distinct from lower-grade zinc-plated hardware, making grade identification easier in the field. The right-hand thread conforms to Unified National Fine (UNF) standards. This nut measures 11/16 inches across the flats and 3/8 inch in height. It is installed by mechanics, millwrights, HVAC technicians, and other trade professionals working with high-strength bolted assemblies.
This hex nut is suited for use in high-load bolted connections across residential and commercial mechanical systems, equipment mounting, structural fastening, and machinery assembly. The fine thread pitch of the 7/16-20 designation provides greater thread engagement and improved resistance to loosening under vibration compared to coarse-thread equivalents, making it appropriate for applications involving dynamic or cyclical loading. Sold individually per package with a minimum order quantity of 50 pieces.
Designed as an OEM-style replacement or service fastener compatible with any 7/16-20 UNF threaded bolt or stud requiring a Grade 8 hex nut.
Installation is performed by qualified mechanics, HVAC technicians, or millwrights using a standard wrench sized to 11/16 inches across the flats. Ensure mating bolt or stud is also rated Grade 8 or higher and is free of debris or damage before threading the nut. Do not mix Grade 8 nuts with lower-grade fasteners in the same joint. Follow applicable torque specifications per the equipment manufacturer or relevant fastening standards for the application.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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