Discover double-ended dowel screws, ideal for creating secure hidden joints in wood-to-wood applications. Also called wood screw studs, these headless fasteners feature sharp, coarse wood screw threads (or lag threads) on both ends and a small, unthreaded section in the middle. They are often used in stair construction, wood projects, or furniture building applications, such as attaching furniture legs to tables, chairs, or desks. Huyett offers carbon steel and zinc-plated dowel screws in multiple sizes to facilitate aesthetic wood-to-wood connections.
Dowel screws are headless, double-ended screws designed to create hidden joints in wood-to-wood applications. Wood screw studs cut mating threads into the wooden walls of pre-drilled pilot holes during installation, offering enhanced holding power. Often, an adhesive is also applied to the mating surfaces for additional security. Due to their hidden placement, flush finish, and reliability, these screws are often chosen for woodworking projects, furniture assembly, and flush mount applications.
Dowel screws are designed for facilitating wood-to-wood connections. Similar fasteners include:
Wood Screws: Ideal for wooden base material, these light-duty screws are often used in furniture assembly, cabinet work, and finish carpentry. Frequently, they are made of carbon steel, stainless steel, brass, or other metals.
Deck Screws: These specialized wood screws are made of corrosion-resistant materials like stainless steel or given protective finishes, making them ideal for outdoor applications like anchoring flooring in deck construction.
Lag Screws: Compared to wood screws and deck screws, lag screws have increased load bearing capacity and pullout strength. They are often made of hot-dip galvanized steel for improved corrosion resistance.
These wood screw studs are popular with furniture builders and more due to their many benefits:
Flush Finish: Wood screw studs are used to create hidden joints, making them an ideal choice for furniture builders desiring a smooth, aesthetic finish.
Self-Tapping Threads: The sharp wood screw threads cut mating threads into the walls of the pilot hole for enhanced pullout resistance.
Secure Fastening in Wood: Especially when installed alongside adhesives, these headless fasteners are ideal for facilitating secure, permanent connections in wood.
Low Risk of Corrosion: Since these screws are designed to create hidden joints, they are often unexposed to the environment, significantly lowering their risk of corrosion.
Simple Installation: Wood screw studs are installed inside pre-drilled holes using a socket or wrench. Unlike many other fasteners, they do not require hardware items like washers, nuts, or threaded inserts. This reduces hardware and manufacturing costs.
Consider the following factors to determine the right headless fastener for your application:
Screw Size: Consider factors such as overall length, thread length, diameter, and thread pitch. Larger screws offer higher durability and holding power, while smaller screws are more space efficient.
Host Material: Wood screw studs are ideal for both hardwood and softwood. They are not suited for metal, plastic, or other base materials.
Material and Finish: Huyett offers carbon steel double-ended screws with zinc plated or plain finish. Zinc plating improves steel's corrosion resistance. Learn more in our guide to fastener finishes.
Dowel screws and hanger bolts are often confused due to their similar designs and use cases. Discover below what makes these two double-ended fasteners different:
Thread Types: Dowel screws have sharp wood threads on both ends. Hanger bolts have sharp wood threads on one end and fine machine threads on the other.
Host Material: For wood-to-wood connections, choose wood screw studs. For wood-to-metal connections, choose hanger bolts.
Installation Process: When installing a wood screw stud, a cloth may be wrapped around one end to protect the threads and create a wrenching surface. When installing a hanger bolt, two nuts are tightened onto the machine threads to create a wrenching surface.
Connection Type: Especially when installed with wood glue, dowel screws facilitate permanent connections. In contrast, hanger bolts are ideal for temporary connections in applications that may require disassembly, such as knock-down furniture. This is because the machine-threaded end can easily be screwed on and off.
Measure and mark hole placement for both of the wooden components that you will be connecting.
Use the drill bit size recommended by the manufacturer to drill two pilot holes. The holes should be slightly smaller than screw diameter for proper thread engagement.
Install the screw in the larger component first (e.g., in the table top rather than the table leg). Align the double-ended screw with the hole and begin to twist it into the wood by hand.
Wrap a small cloth around the screw to create a wrenching surface. Grip the cloth with the wrench and continue to twist the screw into the hole. It is recommended to use a wrench with teeth or serrations to reduce slippage.
Once the first end of the screw is fully installed, you may want to paint both mating surfaces with wood glue.
Lift the smaller component and align the pilot hole with the protruding end of the dowel screw.
Twist the component around the screw until a flush finish is achieved.
Dowel screws are used for creating hidden joints in wood-to-wood applications – in other words, they join two pieces of wood together without any visible screw heads or hardware on the surface. These double-ended screws allow for a hidden connection and a flush finish, making them ideal for furniture assembly and other aesthetic applications.
A dowel screw has sharp wood screw threads on both ends, making it ideal for wood-to-wood applications. A hanger bolt has sharp wood screw threads on one end and fine machine threads on the other, making it ideal for wood-to-metal applications. Additionally, dowel screws are more suited for permanent connections, while hanger bolts are ideal for applications requiring convenient disassembly.
Huyett is a master distributor and manufacturer of industrial fasteners with over 100 years of industry experience. Shop fasteners online for fast shipping time or contact our customer service team today with questions or quote requests.
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