Galvanized Fully & Half Threaded Studs — Double-Ended Screws for Wood-to-Metal Furniture Connections When you need to join wood and metal without a visible bolt head — or create a threaded connection that can be assembled and disassembled repeatedly — a double-ended threaded stud is the right fastener. These galvanized carbon steel studs feature metric machine threads on both ends, allowing one end to thread into a tapped metal insert or nut embedded in wood, while the other end accepts a standard hex nut or metal bracket. Available in fully threaded and half-threaded configurations for different clamping and load requirements. Available in M4, M5, M6, M8, and M10 thread diameters, with lengths from 16 mm (~5/8") to 120 mm (~4-3/4"). The galvanized finish provides corrosion resistance for indoor furniture, workshop fixtures, and light outdoor applications. Both fully threaded (maximum grip along the full length) and half-threaded (smooth shank for shear resistance) options are available depending on your structural requirements. Typical applications include furniture leg connections, metal bracket-to-wood joints, bed frame assembly, shelving unit construction, stair tread mounting, and any project requiring a strong, repeatable threaded connection between wood and metal components. ✅ Compatible with standard metric hex nuts, threaded inserts, and tapped metal brackets in M4, M5, M6, M8, and M10. Suitable for softwood, hardwood, MDF, and metal components with pre-drilled or tapped holes. ✅ Key Features of These Galvanized Double-Ended Threaded Studs 🔩 Double-Ended Machine Thread: Standard metric threads on both ends allow secure connections between wood (via threaded insert or nut) and metal brackets — no bolt head, no visible hardware on the finished surface. 🛡️ Galvanized Carbon Steel: Zinc galvanized coating provides corrosion resistance for indoor furniture, covered outdoor structures, and workshop applications — suitable for humid environments including basements and utility rooms. 📏 Fully Threaded & Half-Threaded Options: Fully threaded studs maximize grip along the entire length; half-threaded studs provide a smooth shank section for better shear resistance and precise clamping — choose based on your load type. ⚙️ Five Metric Thread Sizes (M4–M10): M4–M5 for light furniture and decorative fittings; M6 for general furniture legs and brackets; M8 for heavy shelving and bed frames; M10 for structural connections and heavy-duty equipment. 🪑 Furniture & Structural Ready: Ideal for sofa frames, dining table legs, bed frames, stair treads, metal corner brackets, and any repeatable wood-to-metal assembly that needs to be disassembled for transport or maintenance. 📦 Flexible Pack Sizes: Choose from 2, 5, 10, 20, 50, or 100 pieces to match your project scale — from single repairs to production furniture runs. 🎯 Who Is This For? 🛋️ Furniture Makers & Assemblers Connect sofa arms to metal frames, attach dining table legs to metal brackets, and build bed frames with repeatable, tool-accessible joints that can be disassembled for flat-pack shipping. 🔧 DIY Home Improvement Enthusiasts Repair wobbly chairs, reinforce shelving units, mount stair treads to metal stringers, and build custom storage solutions with professional-grade threaded connections. 🏗️ Workshop & Structural Builders Use M8 or M10 half-threaded studs for workbench legs, jig fixtures, and structural timber-to-metal connections where shear resistance and precise clamping are required. 🏭 Small Manufacturers & Production Teams Order in 50 or 100-piece packs for furniture production lines, flat-pack assembly kits, and workshop jig fabrication — consistent thread quality across every batch. Product Type Double-Ended Threaded Studs (Fully Threaded & Half-Threaded) Material Carbon Steel Finish Galvanized (zinc coating, corrosion-resistant) Thread Sizes M4, M5, M6, M8, M10 (metric) Thread Type Standard metric machine thread on both ends Thread Configuration Fully Threaded (entire length) or Half-Threaded (smooth shank center section) Available Lengths 16, 20, 25, 30, 35, 40, 45, 50, 55, 60, 70, 75, 80, 90, 100, 120 mm (varies by diameter) Pack Quantities 2, 5, 10, 20, 50, 100 pieces Installation Requires pre-drilled or tapped holes; use hex nuts, threaded inserts, or tapped metal brackets Typical Applications Furniture legs, bed frames, shelving, stair treads, metal brackets, workshop jigs ❓ Frequently Asked Questions What is the difference between a fully threaded and half-threaded stud? A fully threaded stud has machine threads running the entire length of the bolt — maximizing grip and pull-out resistance, ideal for tension loads. A half-threaded stud has threads only on both ends with a smooth shank in the middle — the smooth section resists shear forces better and allows precise clamping without thread interference. For most furniture connections, fully threaded works well; for structural joints with lateral loads, half-threaded is preferred. Do I need to pre-drill holes before installing these studs? Yes. These are standard machine-thread studs, not self-tapping screws. For wood, you need to either pre-drill and use a threaded insert (recommended for best holding strength), or use a nut on the back side. For metal, the hole must be tapped to the correct thread size, or you can use a nut and washer on the back. Always drill a pilot hole slightly smaller than the thread diameter when using threaded inserts. How do I install a double-ended stud without a head to grip? Use the jam-nut method: thread two hex nuts onto one end and lock them firmly against each other. Use a wrench on the outer nut to drive or thread the stud into position. Once installed, remove both nuts by loosening them against each other. Alternatively, use a stud driver bit if available for your drill. Which thread size should I choose for furniture connections? M4 is suitable for light decorative fittings and small furniture. M5 works for medium-duty furniture legs and light brackets. M6 is the most common general-purpose size for dining tables, shelving, and bed frames. M8 handles heavy shelving, workbenches, and structural furniture. M10 is for heavy-duty structural connections such as stair treads, gym equipment, and load-bearing timber frames. When in doubt, size up for safety. Are these suitable for outdoor use? The galvanized coating provides good corrosion resistance for covered outdoor furniture, garden sheds, and protected structures. For direct rain exposure, ground contact, or coastal salt-air environments, stainless steel studs would be a more durable choice. For most indoor furniture and sheltered outdoor applications, these galvanized studs perform well. Can I use these to repair wobbly chairs or bed frames? Yes — this is a common application. The double-ended design creates a rigid, repeatable connection that can be tightened with a wrench. For wobbly joints, remove the old fastener, clean the hole, install a fresh threaded insert if the wood is stripped, then thread in the new stud and tighten the nut firmly. For moving parts or joints that vibrate, add a drop of thread-locking compound for extra security. What is the difference between these studs and hanger bolts? Hanger bolts have a coarse wood-screw thread on one end (for driving directly into timber without a pre-drilled hole or insert) and a machine thread on the other. These double-ended threaded studs have standard machine threads on both ends — they require a tapped hole, threaded insert, or nut on both sides. Hanger bolts are faster to install in wood; threaded studs provide stronger, more precise connections when used with proper inserts or tapped metal. 🛒 Select your size and pack quantity above, then add to cart.
