A Double Threaded Hanger Bolt with a Lock Nut is a specialized fastening solution that combines the versatility of a double threaded hanger bolt with the added security of a lock nut. This combination ensures a robust, vibration-resistant connection, making it ideal for applications where stability and prevention of loosening are paramount. The hanger bolt secures into a wooden or soft material substrate, while the machine-threaded end, coupled with a lock nut, provides a dependable attachment point for various components.

Definition

A double threaded hanger bolt with a lock nut consists of a fastener with a lag screw thread at one end for embedding into wood or other suitable base materials and a machine screw thread at the other. The inclusion of a lock nut (such as a nylon insert nut, serrated flange nut, or deformed thread nut) on the machine-threaded end prevents the nut from loosening under vibration, thermal expansion, or dynamic loads. This assembly creates a highly secure, semi-permanent attachment point for external components, preserving the integrity of the connection over time.

Key Features

• Double Threaded Design: Features a lag screw thread for wood entry and a machine screw thread for external attachments.
• Integrated Lock Nut: Includes a lock nut (e.g., Nyloc nut) designed to resist loosening due to vibration, ensuring long-term stability.
• High Grip Lag Thread: Provides excellent pull-out resistance and a strong anchor in wooden or soft substrates.
• Standard Machine Thread: Allows for compatibility with a wide range of standard nuts, washers, and fixtures on the exposed end.
• Corrosion Resistance: Often made from materials like stainless steel or zinc-plated steel for durability in various environments.

Advantages

• Enhanced Security: The lock nut significantly reduces the risk of loosening, even in applications subject to vibration or dynamic forces.
• Reliable Long-Term Connection: Ensures that attached components remain securely fastened over extended periods without the need for frequent retightening.
• Prevents Component Detachment: Ideal for critical applications where the accidental detachment of components would be problematic or dangerous.
• Versatile Application: Suitable for a broad range of uses where strong, stable, and vibration-resistant fastening to wood or similar materials is required.
• Streamlined Assembly: Provided as a single unit or kit, simplifying the ordering and assembly process.

Applications

• Solar Panel Mounting Systems: Critical for securing solar racking to wooden roof structures, ensuring stability in high winds and varying temperatures.
• Deck and Railing Construction: Used to securely attach railing posts, balusters, and other deck components to wooden framing.
• Furniture Manufacturing: For assembling furniture where robust, vibration-resistant joints are essential, particularly in high-use items.
• Fixture and Equipment Mounting: Ideal for hanging heavy fixtures, machinery, or equipment from wooden beams where movement or vibration might be a concern.
• Automotive and Marine Applications: In certain scenarios where fastening to wood or composite materials requires a high level of vibration resistance.
• Construction and Renovation: Whenever structural components need to be securely fastened to wood with a reduced risk of loosening over time.