DIN580 Eye Bolt A4-70 | Forged Lifting Ring Bolt Marine
Theeye bolt — standardized under DIN 580 for vertical lifting and DIN 444 for general rigging — is a forged one-piece fastener with a threaded shank and an integral closed ring at the head. Unlike standard hex bolts that require a separate shackle or hook attachment, the lifting eye bolt provides a ready-made anchor point for slings, wire ropes, chains, and carabiner hooks. Every DIN 580 eye bolt is stamped with its working load limit (WLL) and manufacturer identification directly on the ring, ensuring field-visible load rating compliance — a non-negotiable safety requirement for any shipboard lifting operation.
On marine vessels and offshore platforms, forged eye bolts serve as the primary attachment point for countless lifting and securing tasks: hoisting engine room machinery components during maintenance, anchoring temporary rigging for overboard equipment deployment, providing fixed lashing points on deck for cargo containers and spare parts crates, and acting as permanent mooring bollard backup points on workboat decks. The A4-70 stainless steel eye bolt (316 grade, passivated) is the standard choice for saltwater-exposed applications — its forged austenitic structure combines deep corrosion resistance with the ductility needed to absorb shock loads without brittle fracture. For cost-sensitive interior lifting points, forged carbon steel Grade 5orGrade 8 with zinc or Hot-Dip Galvanized finish provides a proven alternative.
OurDIN 580 lifting eye bolts are hot-forged from a single piece of material — never welded or fabricated — to eliminate weak points at the shank-to-ring junction that welded assemblies suffer from. The ring inner diameter and shank length conform to DIN 580 dimensional tables, with metric threads from M6 to M64 covering WLL ratings from 0.07 tonnes to 8.0 tonnes at 0° (vertical inline) lift angle. All load-rated eye bolts are supplied with EN 10204 3.1 material certification; CE marking per Machinery Directive 2006/42/EC and IACS class society (LR, DNV, BV, ABS) approval are available for marine lifting appliance registration. DIN 444 eye bolts for non-lifting rigging and tie-down use are also stocked in matching sizes.
| Product Name | DIN580 Forged Lifting Eye Bolt / DIN444 Rigging Eye Bolt |
| Standard | DIN 580 (lifting) / DIN 444 (rigging) / ISO 3266 |
| Type | Single-piece forged eye bolt (no weld, no assembly) |
| Thread Size | M6 – M64 |
| WLL Range | 0.07t – 8.0t (at 0° lift angle, per DIN 580) |
| Material | Forged A2-70 (304) / A4-70 (316) SS / Carbon Steel Grade 5 / Grade 8 |
| Surface Finish | Passivated (SS) / Zinc Plated / HDG / Self-colored |
| Marking | WLL (t) + size + manufacturer ID stamped on ring (lifting type) |
| Certification | EN 10204 3.1, CE (2006/42/EC), IACS (LR, DNV, BV, ABS) |
| Applications | Lifting, rigging, mooring lashing, cargo tie-down, equipment hoisting |
| Packing | Individual or bulk / Carton / Pallet / Custom labeling |
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