Stainless Steel Lifting Eye Bolts & Eye Nuts — M3 to M16, A2/A4 Grade

Match the eye bolt or eye nut thread size to the tapped hole or bolt diameter in your project. For example, M6 (≈ 1/4" equivalent) is commonly used for light rigging and hooks, while M10–M16 are generally chosen for heavier structural or lifting tasks. Always verify the thread pitch listed in the variant options matches your existing hardware. When in doubt, measure your bolt diameter with calipers and cross-reference the pitch.

Working load limits vary by thread size and grade. As a general guideline, smaller sizes like M3–M5 are typically suited for light-duty hanging and craft applications, while M8–M16 are generally used for heavier rigging and lifting tasks. Always apply an appropriate safety factor (typically 4:1 or greater for overhead lifting) and consult a structural engineer for critical load-bearing applications. Contact us for specific load data on your chosen size.

Yes. Both A2 (304) and A4 (316) stainless steel offer good corrosion resistance. A4/316 grade adds molybdenum, which provides superior resistance to chlorides and salt spray — making it the preferred choice for marine environments, coastal installations, and outdoor rigging exposed to moisture or salt air. If you're unsure which grade you're ordering, please check the variant description or contact us.

A2 (304 stainless steel) provides good general corrosion resistance suitable for most indoor and sheltered outdoor applications. A4 (316 stainless steel) contains added molybdenum for enhanced resistance to chlorides and salt spray, making it the better option for marine, coastal, or chemically aggressive environments. For most workshop and home DIY uses, A2 is generally sufficient.

These eye bolts and eye nuts use standard ISO metric threads. Available sizes range from M3 (0.5 mm pitch) through M16 (2 mm pitch). They are not compatible with UNC/UNF imperial threads. Please confirm your application uses metric threading before ordering. If you need a quick reference: M6 ≈ 1/4", M8 ≈ 5/16", M10 ≈ 3/8", M12 ≈ 1/2".

Yes. Eye nuts are internally threaded and are designed to thread onto a matching metric bolt or threaded rod. For example, an M8 eye nut (1.25 mm pitch) will fit any standard M8 × 1.25 threaded rod or bolt. Always confirm the pitch matches before assembly to avoid cross-threading or stripping.

You can select your preferred quantity from the QTY variant option: 1, 2, 4, 10, 12, or 22 pieces depending on the size and type. Larger quantity packs offer a lower per-piece cost and are ideal for project or bulk use. For a single replacement or test fit, the 1-piece option is available. For rigging multiple anchor points or stocking a workshop, the 10- or 22-piece packs are generally the most cost-effective choice.