Stainless Steel Eye Bolts M4–M24 | A2 Forged Metric Lifting Ring Screws

Match the eye bolt thread diameter to your tapped hole or nut size. For example, M8 (≈5/16" nominal) is a common choice for light rigging and hanging fixtures. As a general rule, select a size whose rated load capacity exceeds your maximum expected load by at least a 4:1 safety factor. When in doubt, size up — the next size costs little more but adds meaningful margin.

Working load limits vary by size and application angle. Smaller sizes like M4–M6 are generally suited for light-duty hanging tasks (lighting, small fixtures), while M12–M24 are typically used for heavier rigging and structural anchoring. Always consult a load table for your specific size and never exceed the rated working load limit. Contact us to confirm rated capacities for your chosen size.

Yes. These are made from A2 (304) stainless steel, which offers good corrosion resistance in most outdoor environments including coastal and humid conditions. For highly aggressive saltwater immersion or chemical exposure environments, A4 (316) grade is generally recommended instead. For typical outdoor and near-coastal use, A2 performs well long-term.

These eye bolts use standard ISO metric coarse thread. Each size ships with its standard pitch: M4×0.7, M5×0.8, M6×1.0, M8×1.25, M10×1.5, M12×1.75, M14×2.0, M16×2.0, M18×2.5, M20×2.5, M22×2.5, M24×3.0. They are fully compatible with standard metric hex nuts and tapped holes machined to ISO coarse pitch specifications.

Forged eye bolts are generally rated for straight vertical pulls when fully seated and tightened. Angled loads significantly reduce the safe working load — typically by 25–75% depending on the angle from vertical. For angled or multi-leg rigging applications, use shoulder-pattern eye bolts and consult a rigging load chart specific to your size and angle.

Thread the eye bolt fully into the tapped hole or through a clearance hole with a nut and washer on the back side. Tighten until the shank is fully engaged and the eye is oriented in the intended load direction. Never leave threads partially engaged — partial thread engagement dramatically reduces holding strength. For through-bolt installations, use a flat washer and nut on the back side and torque to the fastener's specification.

Forged eye bolts are shaped under high pressure from a single piece of metal, resulting in a denser grain structure and generally higher strength and fatigue resistance compared to stamped or bent-wire eye bolts. Forged types are the appropriate choice for load-bearing, rigging, and any application where the eye will experience dynamic or repeated loading.

These listings include eye bolts only. Standard metric hex nuts and flat washers in matching sizes are available separately. If you need a complete fastener kit for a through-bolt installation, contact us and we can point you to compatible hardware.