– covering thread engagement, contact surfaces, and the orientation of the ring during angled lifts
Eye bolts and eye nuts let you connect a load to lifting gear. However, a lifting point is only safe when the product, the threaded connection, and the direction of the lift are all appropriate for the task. Incorrect installation can subject the threads or the lifting point itself to stresses for which they were not designed.
Screw the lifting point in completely - and verify thread engagement
First, select a lifting point suitable for the load weight, thread size, and direction of the lift. An eye bolt (e.g., DIN 580) is screwed into a threaded hole, while an eye nut (e.g., DIN 582) is mounted onto a threaded stud or bolt.
The component must be screwed in fully to ensure sufficient thread engagement, in accordance with the product specifications. Verify that the threads are compatible, clean, and undamaged. The thread depth in the workpiece must be sufficient to allow for proper installation without the component "bottoming out" prematurely. Always follow the manufacturer’s instructions regarding thread engagement and installation - there is no single universal standard that applies to all materials and products.
The collar of the lifting point must sit flush against the workpiece
For lifting points equipped with a collar, the collar must sit flush and maintain full contact with the surface of the workpiece once the component is tightened. There must be no visible gap or space. The collar supports the lifting point and is particularly important when the pull is not vertical.
If the eye is not oriented correctly when the collar is seated, the component must not be unscrewed slightly to adjust its direction. Doing so can loosen the connection and prevent the collar from seating properly. Use only a solution approved by the manufacturer or select an adjustable or swivel lifting point designed for such loading.
Use only a suitable solution permitted by the manufacturer, or select an adjustable/swivel lifting point designed for pulling.
Quick checklist before lifting with a lifting point
- Is the lifting point designed and approved for lifting?
- Do the thread type and size match, and are the threads clean and undamaged?
- Is the component screwed in completely, with sufficient thread engagement?
- Does the collar sit flush and make full contact with the object?
- Is the ring aligned with the direction of the pull in the event of an angled load?
- Are the WLL and any necessary load reductions for angled lifts being observed?
- Is the lifting point free from visible damage, deformation, or abnormal wear?
If you are in doubt regarding product selection or installation, stop and seek clarification before performing the lift.
For angled lifts, the eye or ring of the lifting point must be correctly oriented
When the pull is not vertical, the lifting ring must be aligned with the direction of the pull - not positioned across it. If the ring is subjected to lateral loading, the lifting point may experience unintended bending and side stress.
Additionally, verify that the specific model is approved for the intended direction of the lift, and apply the reduced working load limit applicable to angled lifts. The permissible load decreases significantly as the pull angle increases. If the load may be applied from various directions, or if the ring needs to rotate to follow the load, you should select a lifting point specifically designed for this purpose - such as a swivel lifting point. You may wish to download our load tables for lifting points to determine the recommended load limits for angled lifts.
Always adhere to the product markings and the manufacturer’s instructions.
An eyebolt from a hardware store is not necessarily a certified lifting point
An eyebolt may resemble a lifting ring bolt, yet it may not be designed or certified for lifting applications. Appearance alone is therefore not sufficient to determine whether an item may be used as a lifting point.
Look for clear product identification and documentation: the manufacturer, the relevant standard or product specification, as well as markings and information regarding the Working Load Limit (WLL), where applicable. A standard eyebolt from a hardware store might be intended for securing, suspension, or other purposes - not necessarily for lifting loads. If you cannot verify that the product is approved for lifting, do not use it for that purpose.
Our product range includes, among other items, lifting eyebolts (DIN 580) and lifting eye nuts (DIN 582), as well as other types of lifting points. The choice of product and its permitted use depend on the specific model. Always consult the product specifications and ask a qualified professional if you are in doubt.
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Fixed or swivel lifting point?
The most commonly used lifting points are fixed and swiveling (swivel eyebolts). Learn about the differences between these two types and their respective applications, so you are better equipped to make the best choice for your task.
Rejection of lifting components
Learn what to observe and when to discard lifting components.
Correct use of lifting points
In this article "Correct Use of Lifting Points," you will also find a video with helpful advice on selecting lifting points and using them correctly.
