Value Collection HNCWI00250-100BX K-lock Hex Nut 1/4-20

Product Description

The VALUE COLLECTION HNCWI00250-100BX is a K-Lock hex nut with an integrated conical lock washer, manufactured from steel with a zinc plated finish. This one-piece fastener combines a standard hex nut with a serrated conical washer that bites into the mating surface under torque, resisting loosening from vibration and dynamic loads. The 1/4-20 UNC thread size makes it a common choice across HVAC equipment, electrical enclosures, plumbing fixtures, and general mechanical assemblies. Installation is performed by electricians, HVAC technicians, plumbers, and mechanical contractors working with threaded fastener applications.

This K-Lock nut is suited for residential and light commercial applications where vibration resistance is required without a separate lock washer component. Typical install scenarios include securing panels, brackets, motor mounts, and control enclosures in HVAC systems and electrical equipment. The conical washer profile engages the workpiece surface as the nut is driven down, providing a reliable locking action on steel, coated, and painted surfaces. This part is sold in a minimum order quantity of 100 pieces per box.

Key Features

• Integrated conical lock washer eliminates the need for a separate locking component
• 1/4-20 UNC thread standard for broad compatibility with inch-series fastener applications
• Zinc plated steel construction provides corrosion resistance in dry and mildly humid environments
• Conical washer bites into mating surface under torque to resist vibration-induced loosening
• Width across flats of 7/16 inches fits standard 7/16 inch hex wrenches and sockets
• Washer diameter of 0.5 inches distributes clamping load over a wider bearing surface

Compatibility

Designed as a standard 1/4-20 UNC K-Lock replacement or new-installation nut for use in HVAC, electrical, plumbing, and general mechanical assemblies requiring a vibration-resistant threaded fastener.

Installation Notes

Installation requires a standard 7/16 inch wrench or socket driver. Power down or de-energize any equipment before accessing fastener locations inside electrical enclosures or control panels. Ensure mating threads are clean and free of debris before driving the nut to avoid cross-threading. Follow applicable mechanical and electrical codes, including NEC guidelines, when securing components inside electrical equipment.