Lifting Eye Bolts M3 to M24 — A2 Stainless Steel Eye Screws

Match the thread diameter to your tapped hole or nut size. For example, M6 (≈1/4" diameter) is typically used for light loads up to around 50 kg, while M12 (≈1/2") handles heavier rigging applications. The shank length should generally be at least 1.5× the thread diameter for secure engagement — so for M6, aim for at least a 9–10mm thread engagement depth. When in doubt, size up.

Working load limits vary by size. As a general guide, M6 eye bolts are typically rated for around 50–80 kg, M8 for 100–150 kg, M10 for 200–300 kg, and M12 for 400–600 kg under vertical straight-line loads. Always derate for angled pulls — a 45° angle can reduce the safe working load by 30% or more. For critical lifting applications, contact us to confirm the rated capacity of your specific size.

Yes. These are made from A2 (304) stainless steel, which offers good corrosion resistance in most outdoor environments, including rain, humidity, and mild coastal exposure. For highly aggressive saltwater immersion or chemical environments, A4 (316) stainless steel is generally recommended. If you're unsure, contact us to discuss your specific conditions.

These use standard ISO metric coarse threads (M3 through M24). They are compatible with standard metric nuts, tapped holes, and threaded inserts following DIN/ISO specifications. They are not compatible with UNC or UNF inch-standard threads. If your existing hardware is imperial (e.g., 1/4"-20 or 3/8"-16), these will not fit.

These eye bolts are designed for lifting and rigging applications. For certified overhead lifting in professional or industrial settings, always verify the working load limit for your specific size and consult applicable safety standards (e.g., ASME B30.26 or equivalent). For DIY and light-duty hoisting within rated capacity, they are generally well-suited. Never exceed the working load limit and always inspect hardware before each use.

Thread the eye bolt fully into the tapped hole or onto a nut until the shoulder (collar, if present) seats flush against the surface. Do not leave the shank partially engaged — insufficient thread engagement is a leading cause of failure. For angled loads, orient the eye in the plane of the load direction. Hand-tighten first, then snug with a tool. Avoid over-torquing stainless steel fasteners, as this can cause galling (thread seizure).

Both have an M6 thread diameter (≈0.24"), but the shank length differs — 12mm (≈15/32") vs. 20mm (≈25/32"). Choose the longer shank when you need deeper thread engagement, such as in softer materials like aluminum, wood, or plastic, or when passing through a thicker panel or plate. For steel tapped holes, a shorter shank is typically sufficient if engagement depth meets the 1.5× diameter guideline.

Yes — the M3 x 9mm size is available in a 500-piece pack for high-volume needs. For bulk orders of other sizes, contact us directly and we'll do our best to accommodate your requirements.