Stainless Steel Lifting Eye Bolts — A2 304 Grade, Metric M3 to M42

Match the thread diameter to your tapped hole or nut. For example, an M8 eye bolt threads into an M8 tapped hole. As a general rule, size the bolt so its working load limit (WLL) exceeds your load with a safety factor of at least 4:1. When in doubt, go one size up. If you need help selecting, contact us with your load requirements.

Working load limits vary by size. As a general reference, M6 eye bolts typically handle around 100–150 kg, M10 around 300–500 kg, and M20 around 1,500–2,000 kg when loaded axially. These are typical industry ranges — contact us to confirm the rated WLL for your specific size before use in any lifting application.

Yes. A2 304 stainless steel provides good corrosion resistance in most outdoor and light marine environments, including rain, humidity, and mild salt spray. For prolonged immersion or highly aggressive saltwater exposure, A4 316 stainless steel is generally recommended. These bolts are well-suited for boat hardware, dock rigging, outdoor lifting points, and garden or patio installations.

These are metric coarse-thread eye bolts following the ISO standard (e.g., M8 × 1.25 pitch, M10 × 1.5 pitch). They are not compatible with UNC or UNF inch-thread fittings. If your existing hardware uses inch threads, these will not fit. Always confirm the thread pitch matches your application before ordering.

These are straight-shank eye bolts designed primarily for in-line (axial) loading. Angular loading significantly reduces the safe working load — typically by 25–75% depending on the angle from vertical. For consistent angular or multi-directional loads, a swivel hoist ring is generally a safer choice. Consult a qualified rigger for critical lifting setups.

Divide the millimeter diameter by 25.4 to get the inch equivalent. Quick reference: M6 ≈ 0.24" (~1/4"), M8 ≈ 0.31" (~5/16"), M10 ≈ 0.39" (~3/8"), M12 ≈ 0.47" (~1/2"), M16 ≈ 0.63" (~5/8"), M20 ≈ 0.79" (~3/4"). These are approximate — always order by the metric designation to ensure correct fit.

It depends on your installation. If threading into a tapped hole, no nut is needed — just torque to spec. If passing through a clearance hole, a matching metric hex nut and flat washer are recommended to distribute load and prevent pull-through. Nuts and washers are not included with this listing.