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Marine Eye Bolts
Product Overview
Marine eye bolts are forged from 316 and 304 stainless steels, designed for lifting, mooring, and rigging applications in marine and offshore environments. The eye configuration allows for secure attachment of ropes, cables, chains, and shackles. Manufactured per DIN 580 and ISO 3266 standards, these eye bolts feature a continuous grain flow for enhanced strength. Passivation per ASTM A967 removes free iron and restores the passive layer. Dimensional tolerances follow ISO 965-2, with full material traceability and load test certifications available.
Key Features
- Corrosion resistance in saltwater and marine environments.
- Forged construction for superior strength and reliability.
- Eye design for versatile attachment options.
- Available with metric and inch threads.
- Load tested and certified for lifting applications.
| Attribute | Specification |
| Material grades | 316 (A4), 304 (A2), duplex 2205 (optional) |
| Diameter range (metric) | M6 – M36 (coarse pitch) |
| Diameter range (inch) | 1/4 – 1-1/2 inch (UNC) |
| Working load limits | 0.5 – 15 tonnes (depending on size) |
| Standards | DIN 580, ISO 3266, ASTM F541 |
| Surface treatments | Passivation, electro-polishing, zinc plating |
| Eye inside diameter | 1.5× – 2.5× nominal diameter |
| Certification | EN 10204 3.1, load test reports |
Marine & Offshore
- Mooring and docking
- Deck hardware and rigging
- Subsea equipment handling
Lifting & Rigging
- Hoist and crane attachments
- Chain and cable terminations
- Load securing and tie-down
Industrial
- Heavy equipment handling
- Shipping and logistics
- Construction and demolition
Ensure the eye bolt is fully threaded and seated against the bearing surface. For lifting applications, use only eye bolts with load test certification. Never exceed the rated working load limit (WLL). Inspect for wear, corrosion, or deformation before each use. Apply anti-seize compound to threads to prevent galling in marine environments. For angular lifts, reduce the WLL according to the angle of the sling.
Frequently Asked Questions
Production & Customization
Chance & Union utilizes hot forging and CNC machining processes to produce marine eye bolts in both standard and custom dimensions. We offer material selection support, prototype development, and high-volume production with full quality control per ISO 9001. Load testing, dye penetrant inspection, and dimensional verification are available. Our engineering team can assist with design modifications for specific lifting and rigging requirements.
Storage & Handling
- Store in a clean, dry area with relative humidity below 55% to maintain passivation.
- Avoid contact with carbon steel to prevent galvanic corrosion.
- Use plastic or coated containers; separate by size and grade.
- Implement FIFO rotation; recommended shelf life up to 36 months in original packaging.
- Inspect for rust, pitting, or mechanical damage before each use.
Leveraging the factory's robust R&D and production capabilities, we specialize in high-strength rivets bolts, nuts, washers, pins, screws, and various non-standard custom parts. As experienced Custom Marine Eye Bolts Suppliers, we provide flexible manufacturing solutions for different customer requirements. Our product range covers materials including stainless steel, alloy steel, aluminum alloy, copper, and special alloys, utilizing processes such as cold heading, hot forging, and CNC machining. Our products are exported to over 25 countries, serving more than 200 clients.
Chance & Union is committed to seamlessly connecting "Manufactured in China" with the international market, providing global customers with one-stop fastening solutions from R&D to mass production through professional technology and exceptional quality.
