304 Stainless Steel Lifting Eye Bolts Metric M8 M10 M12 — Ring Head Screws

Measure the thickness of the material you are threading into, then add enough length for full thread engagement — generally at least 1.5× the bolt diameter. For example, an M8 bolt typically needs at least 12mm of thread engagement. Lengths listed are the shank length excluding the head; available options range from 15mm (≈0.6") to 200mm (≈7.9"). When in doubt, choose a longer bolt and use a nut on the back side.

Working load limits depend on bolt diameter, installation depth, and the angle of the load. As a general guideline, M8 eye bolts typically support 100–200 kg vertically when fully engaged; M10 typically 200–350 kg; M12 typically 350–500 kg. Always apply an appropriate safety factor (typically 4:1 or greater) and consult a structural engineer for critical lifting applications.

Yes. Grade 304 (A2) stainless steel offers good corrosion resistance in most outdoor and light marine environments. For highly aggressive saltwater or chemical exposure, Grade 316 (A4) stainless steel is generally recommended. In most coastal and freshwater applications, 304 stainless performs well without additional treatment.

These are ISO metric coarse-thread eye bolts: M8×1.25 pitch, M10×1.5 pitch, and M12×1.75 pitch. They are compatible with standard metric nuts, threaded inserts, and pre-tapped holes of the same pitch. They are not compatible with UNC or UNF inch-thread hardware. If you are unsure, check your existing hardware with a thread gauge before ordering.

Standard shoulder-less eye bolts are generally rated for vertical (axial) loads only. Side or angular loading significantly reduces the safe working load — in some cases by 50% or more at 45°. For angled lifts, use swivel or shoulder-type eye bolts specifically rated for angular loading, and always consult load rating charts for the specific angle involved.

Each variant is a single size (thread diameter × length) sold in packs of 1, 2, 3, 4, 5, 10, 15, or 20 pieces. To get multiple sizes, add each size as a separate item to your cart. Larger packs offer a lower per-piece cost, making them ideal for contractors or ongoing projects.

No special tools are required. Thread the bolt into a pre-tapped hole or pair it with a standard metric nut and tighten with a wrench. Before final tightening, orient the ring in the direction of the intended load. Ensure full thread engagement for maximum holding strength.