The Stainless Steel Lifting Eye Bolt (manufactured to DIN 580 / ISO 3266 standards) is a critical safety component used for rigging, lifting, and securing heavy loads. Unlike standard bent eye bolts which can open up under load, our Stainless Steel Lifting Eye Bolt is drop-forged as a single solid piece with a reinforced collar, allowing it to withstand significant tensile forces in marine, industrial, and architectural applications.
Product Overview: Each Stainless Steel Lifting Eye Bolt is precision-cast from Stainless Steel A2 (304) or marine-grade A4 (316). They are marked with the thread size (e.g., M8, M10) and material grade, ensuring traceability and safety compliance for overhead lifting.
Stainless Steel Lifting Eye Bolt Specifications
| Product Name | Lifting Eye Bolt / Ring Screw / Machinery Eye Bolt |
| Standard | DIN 580 (Metric) / ISO 3266 |
| Material Grade | Stainless Steel A2 (304) / A4 (316) |
| Production Method | Drop Forged & Cast (Not Bent Wire) |
| WLL (Working Load Limit) | Varies by size (e.g., M8 = ~140kg vertical load) |
Engineering Insight: Safety & Installation
Using a Stainless Steel Lifting Eye Bolt correctly is a matter of life safety. Please observe the following rules:
- The Collar is Key: The wide flat base (collar) under the eye must sit completely flush against the mounting surface. This transfers the load effectively. If there is a gap, the bolt shank may bend or snap.
- Load Direction: DIN 580 bolts are strongest when pulled vertically (0° angle). If you pull at a 45° angle, the Safe Working Load (SWL) drops significantly (often by 30-70%). Never pull sideways (90°) unless the bolt is specifically rated for it.
For more details on rigging hardware safety, please refer to the Eye bolt entry on Wikipedia.
Material Guide: A2 vs A4
- A2 (304): Suitable for food processing machinery, pump lifting, and general factory use.
- A4 (316): Mandatory for yachts, docks, and outdoor art installations. Saltwater will pit A2 steel, potentially weakening the lifting point over time.
Frequently Asked Questions (FAQ)
Q: What is the difference between DIN 580 and DIN 582?
A: DIN 580 is the Eye Bolt (Male thread). DIN 582 is the Eye Nut (Female thread). Both are used for lifting.
Q: Are these tested?
A: Yes, Handan Bolt performs proof-load testing on batches. However, for critical overhead human safety applications, always perform on-site testing and use a generous safety factor (usually 5:1).
Need Certified Lifting Eyes?
Handan Bolt stocks Stainless Steel Lifting Eye Bolts from M6 up to M36 heavy-duty sizes. We can provide material certificates (3.1) upon request.
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