M5–M12 Stainless Steel A2 Eye Bolts Threaded Ring Screws for Catenary Wire & Hanging

Match the thread diameter to your tapped hole or nut size — M5 (≈3/16"), M6 (≈1/4"), M8 (≈5/16"), M10 (≈3/8"), M12 (≈1/2"). For length, measure the material thickness you're threading into and add at least 1.5× the bolt diameter for adequate thread engagement. For example, an M8 bolt should engage at least 12mm (≈1/2") of thread. For catenary wire anchor points in timber joists, M8×50mm or M10×50mm are typically used.

Working load limits vary by size and installation method. Generally, M5 eye bolts are suited for light-duty loads (typically up to ~50 kg axially), while M12 eye bolts can handle significantly more (typically up to ~500 kg or more) when properly installed and loaded axially. Always apply an appropriate safety factor and consult a structural engineer for critical or overhead load-bearing applications.

Yes. A2 stainless steel (304 grade equivalent) provides good corrosion resistance in most outdoor environments including rain, humidity, and light coastal exposure. For highly aggressive marine environments with prolonged saltwater immersion or spray, A4 (316 grade) stainless steel is generally recommended. Contact us if you need clarification for your specific environment.

These use standard ISO metric coarse threads (M5–M12), compatible with any standard metric nut, threaded insert, or tapped hole following the ISO 68-1 specification. They are not compatible with UNC or UNF inch-standard threads. If you're unsure, a standard M6 or M8 metric nut from any hardware store should thread on freely.

Yes — eye bolts are a standard anchor point for catenary wire, suspension cables, and hanging systems. For catenary applications, ensure the eye bolt is loaded along its axis (straight pull) rather than at an angle, as angular loading significantly reduces the safe working load. Use appropriate wire rope clips, thimbles, or carabiners rated for your specific load. For outdoor catenary wire runs, M8 or M10 sizes are commonly used.

Each order ships in your selected quantity: 2, 4, 10, or 20 pieces of the same size. Select your size (e.g., M8×50) and quantity (e.g., 10 pcs) using the options above. Each variant is a single size — to order multiple sizes, add each size separately to your cart. Larger pack quantities offer a lower per-unit cost.

The eye opening diameter scales with the bolt size. Generally, M5 eye bolts have an inner ring diameter of approximately 10–12mm (≈3/8"–1/2"), and M12 eye bolts have an inner ring diameter of approximately 22–26mm (≈7/8"–1"). Contact us to confirm exact ring dimensions for your specific size if you need to pass a specific wire diameter or shackle pin through the ring.