Eye bolts DIN 444 form B

1. Product description

Eye bolts according to DIN 444 are high-quality fastening elements that have an eye (loop) on the screw head, which serves as a connection point for hooks, bolts, rods, ropes, cables, carabiners, shackles, and much more. Traditionally, these eye bolts are used in construction areas where a reliable and reusable fastening is needed. They are suitable for both static and dynamic loads and offer a secure connection option through the closed eye (loop). The round shape of the eye facilitates the hooking of various connection elements, making them a versatile choice for many construction and assembly tasks.

Eye bolts according to DIN 444 differ in form A, B, and C. - Form B has, however, crystallized as the standard, therefore we mainly offer form B and additionally form LB at mbo Osswald.

Eye bolts form B have a metric partial thread, which does NOT extend continuously to the eye/loop over the entire length of the screw to ensure a defined distance between the thread and the eye/loop.

In contrast, form LB offers a thread that extends over the entire length almost to the eye/loop.

Both forms, B and LB, are typically made from high-quality steel or stainless steel to ensure optimal durability and corrosion resistance. The choice of material depends on the specific requirements of the application, as well as the decision for a surface coating, which can offer additional protection against environmental influences. The standardized manufacturing according to DIN 444 ensures high quality and precise compatibility with other fastening and machine elements.

Features of eye bolts DIN 444 form A include a smaller eye diameter with a stronger eye.
The eye bolts form C differs from eye bolts form B by different shaft lengths.
In practice, mainly eye bolts DIN 1444 form B are used.

2. Product details

Size: M5x25 - M24x200

Material group: Steel strength class 4.6 (Alternatively, strength class 8.8 possible), Stainless steel

Surface: Steel: plain & galvanically zinc-plated white, Stainless steel: plain

Thread type: standard right-hand thread

d2 Hole diameter: 5 - 22

d3 Thread: M5 x 0,8 - M24 x 3

3. Application Areas & Compatibility

Eye bolts can be combined with a variety of fastening elements such as hooks, carabiners, or ropes, enabling their application in diverse scenarios. Their modular nature supports the development of flexible and adaptable fastening and securing systems.

4. Advantages and Benefits

The main advantages of eye bolts DIN 444 form B and LB lie in their high load-bearing capacity and versatility. The precise manufacturing according to DIN standards promises consistently high quality and reliability. Their simple, yet effective design allows for quick assembly and disassembly, saving time and costs. In addition, the wide choice of sizes offers a flexible solution for many different requirements. By using high-quality materials, they are extremely durable and resistant to mechanical stresses as well as environmental influences, which extends their lifespan.

With their long service life and the reduction of maintenance requirements, eye bolts offer an economical solution compared to less robust fastening elements.

5. Assembly and Installation

Ensure that the selected eye bolts meet the requirements of the application, including load capacity, material (e.g., steel or stainless steel), and size, and that all required components are in a flawless condition. These include the eye bolts themselves, as well as suitable nuts, washers, and, if necessary, securing elements.

The eye bolt is inserted into the designated hole. The size of the pilot hole should be slightly smaller than the outer diameter of the threaded part of the eye bolt. Then, the eye bolt is tightened. Ensure to tighten the screws evenly to guarantee an even load distribution.

If necessary, locking nuts or other securing elements can be used to protect the bolts against unintentional loosening.

Regularly check the assembly to ensure that there is no loosening or damage. This is particularly important for applications that are exposed to increased loads or extreme environmental conditions.

6. Accessories and Extensions

Additional nuts DIN 934 or DIN 439, which are applied to the thread of the eye bolts, prevent unintentional loosening. Lock nuts or self-locking nuts offer additional security against vibrations.

Washer DIN 125 form A, which lies under the head of the eye bolt or under the nut, to distribute the load over a larger area and protect the surfaces from damage.

Clevises DIN 71752 / DIN ISO 8140 can be combined with eye bolts to create pivoting connections or connection points with freedom of movement. They are useful in mechanical arrangements that require some mobility or adjustability.