Sep 21, 2026News & Insights
DIN 580 Eye Bolt vs DIN 582 Eye Nut
A DIN 580 eye bolt threads into a tapped hole; a DIN 582 eye nut threads onto a stud. How the two threaded lifting points differ, and how to choose between them.
A DIN 580 eye bolt and a DIN 582 eye nut do the same job: both create a threaded lifting or anchoring point that accepts a hook, shackle or sling. The difference is which thread you already have to work with, and that one point decides the choice for most jobs.
The One Difference That Decides It
A DIN 580 eye bolt carries an external metric thread and screws into a tapped hole. A DIN 582 eye nut carries an internal metric thread and screws onto a bolt or stud. Put simply, the eye bolt is the male half and the eye nut is the female half. If you can tap a hole in the load, you use the eye bolt. If the thread is already there, on a bolt or a stud, you use the eye nut.
What the Two Fittings Have in Common
Both are forged carbon steel with a metric coarse thread, and both are supplied in a black or zinc plated finish depending on the requirement. Both run from M6 to M64. The eye bolt carries a collar under the eye that seats against the load surface, so the load is taken in line. Stainless steel versions of both can be quoted on request.
Load Direction: The Rule That Applies to Both
A threaded lifting point is built to be loaded in line with the eye. The eye bolt must be seated so the pull is applied in line with the eye, and it is not intended for angular loading unless the appropriate type is specified. The eye nut must be tightened down, with the load again applied in line with the eye. With either fitting, match the working load limit to the load and to the sling angle.
The Most Common Mistake
The most common mistake is to tighten the eye bolt down and then pull from the side. Once the pull comes in at an angle, the eye is loaded in a direction it was not designed for. The same caution applies to an eye nut. If your load moves, rotates or pulls at an angle, say so when you enquire: the fitting has to suit the direction of the pull.
Frequently Asked Questions
Can a DIN 580 eye bolt and a DIN 582 eye nut be used together?
They are counterparts rather than a matched pair that screws into itself. The eye bolt goes into a tapped hole, the eye nut goes onto a threaded stud or bolt, and each creates its own lifting point. Choose by what you are fixing into.
Which sizes are available?
Both the DIN 580 eye bolt and the DIN 582 eye nut are available from M6 to M64, in forged carbon steel with a metric coarse thread. The working load limit and weight for each size are listed in the specifications on the product pages. Send us the thread size, the load and the finish you need and we will confirm the size and the quantity.
Which one should I choose for a one-off lifting point?
If the structure can be drilled and tapped, the eye bolt is normally the simpler choice, because the thread is cut into the load itself. If you are fixing to an existing bolt or stud, or would rather not machine the load, the eye nut avoids that work. Either way the deciding factor is the direction of the pull, so describe the application and we will confirm the fitting.
Boyuan Metal manufactures and exports chain, wire rope and rigging hardware, including DIN 580 eye bolts and DIN 582 eye nuts in forged carbon steel. Tell us the thread size, the load you need to lift and the finish you need, and we will confirm the size, the quantity and any stainless steel option.