Value Collection CD559981 Heavy Hex Nut 5/8-11 Unc

Product Description

The VALUE COLLECTION CD559981 is a heavy hex nut threaded to 5/8-11 UNC specifications for use in high-load bolted assemblies. Manufactured from steel with a right-hand thread and a 2B class of fit, this nut delivers a controlled thread tolerance suitable for general structural and mechanical fastening applications. It measures 1-1/16 inches across flats and 39/64 inches in height. The uncoated finish makes it ready for use as-is or for post-installation coating where corrosion protection is required. This fastener is typically installed by millwrights, ironworkers, pipefitters, and general mechanical contractors working on structural or heavy equipment assemblies.

This heavy hex nut is suited for residential and commercial construction, industrial equipment assembly, and structural steel applications where a larger bearing surface than a standard hex nut is required. The heavy series profile increases load distribution across the joint, making it appropriate for high-tension fastener applications in steel-to-steel connections and equipment mounting situations that demand greater clamp force and resistance to vibration loosening.

Key Features

• 5/8-11 UNC threading with 2B class of fit for controlled thread tolerance
• Heavy hex profile at 1-1/16 inches across flats provides increased bearing surface
• Right-hand thread direction for standard installation with compatible bolts and studs
• Steel construction suited for structural and mechanical fastening loads
• Uncoated finish compatible with field-applied protective coatings

Compatibility

Designed as a standard heavy hex nut replacement compatible with 5/8-11 UNC threaded bolts, studs, and threaded rod in structural and mechanical fastening applications.

Installation Notes

Installation is performed by mechanical trades using standard hex wrenches or impact tools sized for a 1-1/16-inch heavy hex profile. Torque values should be determined by the project engineer or applicable fastener specification standard for the joint design. Inspect mating threads for damage or contamination before assembly. For structural applications, follow applicable codes including AISC or ASME fastener standards as required by the project.