Product Overview This product is a stainless steel lifting eye bolt and eye nut designed for safe and reliable lifting, rigging, and anchoring applications. Manufactured from high-quality SS304 (A2) or SS316 (A4) stainless steel, these eye bolts and eye nuts offer excellent corrosion resistance, high load-bearing capacity, and long-term durability in demanding industrial, marine, and construction environments. The product line includes both eye bolts (ring screws) with external threads and eye nuts (ring nuts) with internal threads, available in M6 to M100 metric sizes to suit a wide range of lifting and fastening requirements. Material Grades & Properties Grade Standard Equivalent Key Characteristics SS304 (A2) DIN 580 / DIN 582 / GB/T 825 General-purpose corrosion resistance; suitable for most industrial, construction, and outdoor applications SS316 (A4) DIN 580 / DIN 582 / GB/T 825 Superior corrosion resistance, especially against chlorides and saltwater; ideal for marine, offshore, and chemical environments SS304 (A2-70) delivers approximately 700 MPa tensile strength, making it suitable for moderate corrosive environments. SS316 (A4-80) provides approximately 800 MPa tensile strength with superior pitting resistance due to its 2–3% molybdenum content, which resists chloride pitting far better than 304. In comparative corrosion tests, 316 eye bolts outlast 304 by roughly 150 to 200 hours before visible pitting appears. Product Types Type Description Standard Eye Bolt (Ring Screw) Threaded bolt with a ring-shaped eye at one end; available with or without shoulder DIN 580 / GB/T 825 Eye Nut (Ring Nut) Nut with a ring-shaped eye on top; threaded hole at the bottom DIN 582 DIN 580 Eye Bolt: Features a round ring and is designed for vertical lifting. The official DIN standard sheet specifies sizes from M6 to M100 × 6, with additional sizes including M42, M48, M56, M64, M72 × 6, M80 × 6, and M100 × 6. DIN 582 Eye Nut: A ring with a metric threaded hole at the bottom. The counter thread must be of equal length and the base material of equal strength to that of the nut to achieve perfect contact between mating faces. Specifications Parameter Details Product Type Lifting Eye Bolt (Ring Screw) / Lifting Eye Nut (Ring Nut) Material Stainless Steel SS304 (A2) / SS316 (A4) Thread Size M6, M8, M10, M12, M16, M20, M24, M30, M36 (standard); M42–M100 available Standard DIN 580 (eye bolt) / DIN 582 (eye nut) / GB/T 825 / JIS Thread Type Metric coarse or fine thread Surface Finish Polished / Plain / Passivated Safety Factor 6:1 for DIN 580/582 (standard lifting eye bolts and nuts) Temperature Range -40°C to +200°C (stainless steel A4) Marking CE-marked according to standard The safety factor for DIN 580 eye bolts and DIN 582 eye nuts is 6:1, meaning the minimum breaking force is six times the rated working load limit (WLL).