

Ships same day if ordered by 12 pm
Manufacturer pricing rules prevent us from advertising our discount — no account or email required to see it.
Secure Payments
Easy Returns
Expert Advice
Fast Shipping
The VALUE COLLECTION KP66146 is a 9/16-18 UNF distorted-thread hex lock nut designed for secure fastening in mechanical and structural assemblies. The distorted-thread locking style creates resistance against vibration-induced loosening without requiring a secondary locking element such as a nylon insert or chemical adhesive. Manufactured from Grade C steel with a zinc-plated and wax finish, this nut offers corrosion resistance suitable for general industrial and trade applications. Right-hand thread direction follows standard UNF convention. Sold in a package quantity of 25.
This hex lock nut is suited for use in HVAC equipment assemblies, plumbing support brackets, electrical enclosures, and general mechanical fastening where vibration resistance is required. The 9/16-18 UNF thread size is a common specification in both light industrial and OEM equipment contexts. Tradespersons working on equipment frames, panel mounting, or field fabrication will find this a standard stock item for service kits and shop inventory.
Designed as a standard replacement or stock hex lock nut for any 9/16-18 UNF threaded application requiring a distorted-thread locking style in inch-measurement fastener systems.
Installation is performed with a standard hex wrench or socket sized for the 9/16 hex flat dimension. De-energize and isolate any equipment before accessing fastener points on electrical or mechanical assemblies. Distorted-thread lock nuts are typically single-use; once removed, inspect the locking interference before reusing. Follow applicable mechanical and structural codes for torque requirements specific to the assembly being serviced.
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.
Add install kit to cart
—
Thanks for subscribing!
This email has been registered!