Shouldered Lifting Eye Bolts – 304 A2 Stainless Steel, M3 to M16, Multiple Pack Sizes

Match the thread diameter to your tapped hole or mating nut. As a general guide: M6 (≈1/4" nominal) is typically used for light rigging up to around 50 kg, M8 (≈5/16") for moderate loads, and M12 (≈1/2") or larger for heavier applications. The shank length (e.g., 9mm for M3, 25mm for M16) should be long enough to achieve full thread engagement — generally at least 1× the thread diameter. Always apply an appropriate safety factor for your load.

Working load limits vary by size. Smaller sizes like M3–M5 are generally rated for light-duty loads (typically a few kilograms), while larger sizes like M12–M16 can handle significantly heavier loads. For overhead lifting, always apply a safety factor of at least 4:1 and consult a load rating table for your specific size. Contact us if you need load data for a specific variant.

Yes. The 304 A2 stainless steel construction provides good corrosion resistance in most outdoor, humid, and mildly marine environments. For highly aggressive saltwater immersion or chemical exposure, 316 A4 stainless steel is generally recommended. In typical coastal or freshwater marine applications, 304 stainless performs well with minimal maintenance.

These use standard ISO metric coarse threads, following a DIN 580-style shouldered design. They are compatible with standard metric nuts, threaded inserts, and tapped holes across the M3–M16 range. This thread standard is widely used in North America, Europe, and internationally, making these eye bolts broadly compatible with metric fastener systems.

A shouldered (collared) eye bolt has a machined collar at the base of the shank that seats flush against the mounting surface. This shoulder distributes the load more evenly across the surface and allows for limited angular loading — making it safer and more versatile than a plain shank eye bolt. For any rigging or lifting application, a shouldered design is generally preferred over a plain shank type.

Shouldered eye bolts are generally better suited for angular loads than plain shank types. However, the working load limit is typically reduced when loading at an angle. As a general rule, loads applied at 45° may reduce the rated capacity by up to 30%, and loads at 90° (side pull) may reduce it further. Always consult load rating charts for your specific size and never exceed the rated capacity at any angle.

Each listing offers pack quantities of 1, 3, 5, 8, 10, or 20 pieces of the same size. To order multiple sizes, simply add each size variant to your cart separately. All items ship together from our US warehouse.