M12 Eye Bolts 304 Stainless Steel – Threaded Ring Screws for Catenary Wire & Hanging (40–150mm)

Measure the thickness of the material you are bolting through, then add enough length for the nut and washer on the back side. For example, a 50mm (≈2") bolt works well for materials up to about 30mm thick. As a general rule, the threaded engagement should be at least 1.5× the bolt diameter — so at least 18mm of thread should be engaged for M12. Lengths from 40mm (1-9/16") to 150mm (≈5-7/8") are available in this listing to cover a wide range of material thicknesses.

Load capacity depends on the angle of pull and installation method. M12 eye bolts in 304 stainless steel generally support a working load of around 200–400 kg (440–880 lbs) when loaded axially (straight pull). Side-loading significantly reduces capacity — typically by 25–75% depending on the angle. Always apply an appropriate safety factor and consult a structural engineer for critical or overhead load-bearing applications.

Yes. 304 stainless steel offers strong corrosion resistance and performs well in most outdoor environments including rain, humidity, and mild coastal conditions. It is a solid choice for garden structures, pergolas, fences, and building facades. For highly aggressive saltwater or fully submerged marine environments, 316 stainless steel is typically recommended for superior chloride resistance.

These eye bolts use the standard M12 metric coarse thread (M12 × 1.75mm pitch), which is the most common M12 thread specification. They are compatible with standard M12 hex nuts, flange nuts, nylon lock nuts, and M12 washers widely available at hardware stores across the US and internationally. They are not compatible with UNC/UNF inch-standard nuts.

Full Thread means the entire shank is threaded from tip to the base of the eye — available on the 40mm through 70mm lengths. This gives you maximum flexibility in positioning the nut anywhere along the shank. The b=60mm variants (available on 80mm–150mm lengths) have a 60mm threaded section at the tip, with the remaining shank left unthreaded. This is useful when passing through a fixed-thickness material where you want a clean, unthreaded section inside the material and threads only where the nut engages.

Yes, M12 stainless steel eye bolts are commonly used as anchor points for catenary wire systems, overhead cable runs, pendant lighting, and suspended signage. The closed-ring eye accepts shackles, wire rope clips, and carabiners securely. For overhead applications, always install with a locking nut or thread-locking compound, ensure the bolt is torqued to the manufacturer's specification, and verify the anchor substrate (wood, concrete, steel) can handle the intended load.

Nuts and washers are not included with this listing. Standard M12 metric hex nuts and flat washers are required for most through-bolt installations and are widely available at hardware stores. Using a flat washer under the nut is generally recommended to distribute the clamping load and protect the surface of your material.