M3-M30 Lifting Eye Bolt & Nut Set — 304 Stainless Steel Heavy Duty Ring Hooks

Match the eye bolt thread diameter to your bolt hole or tapped thread. For example, M6 (≈1/4" diameter) is generally suited for lighter loads, while M12 (≈1/2") and above are typically used for heavier rigging. Always verify the working load limit against your actual load with an appropriate safety factor — generally 4:1 or higher is recommended. If you're unsure, contact us with your load requirements and we'll help you select the right size.

Working load limits vary by size. As a general guideline, smaller sizes like M3–M5 are typically rated for light-duty use (a few kilograms), while larger sizes such as M16–M30 can handle significantly heavier loads. Please contact us to confirm the rated working load for your specific size before use in critical lifting applications.

Yes. These are made from 304 stainless steel, which offers good corrosion resistance in most outdoor and mildly marine environments. For highly aggressive saltwater or chemical environments, 316 stainless steel is generally recommended. In most standard outdoor DIY and rigging applications, 304 stainless steel performs reliably.

These eye bolts use standard metric (ISO) threads — M3 through M30. They are compatible with standard metric nuts and tapped holes of the corresponding size. They are not designed for UNC/UNF inch-standard threads. If you're working with inch-based hardware, please contact us before ordering.

Choose the Screw type when you need to thread the eye bolt directly into a tapped hole or a surface (like wood, metal, or a pre-drilled anchor point). Choose the Nut type when you are threading onto an existing bolt or rod and need to secure the eye from the end. Both types share the same fully closed ring/loop head design.

Standard straight-shank eye bolts are generally designed for in-line (vertical) loads. Side or angular loading significantly reduces the safe working load — typically by 25–75% depending on the angle. For consistent angular loads, a shoulder-pattern eye bolt or swivel hoist ring is generally recommended. Contact us if you need guidance for your specific setup.

You can select your preferred packing quantity at checkout: 1 Pc, 2 Pcs, 5 Pcs, or 10 Pcs. Buying in larger quantities offers a lower per-piece cost, which is ideal for project or bulk use.