Among the components responsible for the safety of vehicles, in modern cars, the spring bolt deserves special attention. It allows you to connect the frame holder to the axle spring. High-strength connectors are available in a variety of geometries. They are selected according to requirements, areas of application, as well as for their intended purpose. According to the design of the axle spring and the spring lug bushing, various types of spring bolts are used. They are produced by stress during milling and twisting on special machines. When the shape is given, the surface quality is improved by surface hardening. This allows for increased stiffness, guaranteeing optimal results. The quality of the product remains consistently high quality.

1. FLC
2. FL6
3. FL
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The design of a spring bolt

The FEBI BILSTEIN brand Spring Bolt are ground until the most accurate fit size is reached. Compared to standard screws, these structural elements are distinguished by the absence of metric threads. Their profile angle is 90⁰. This parameter matches the corresponding spring bushing. To securely fix products, manufacturers provide a special groove on the head. In addition, fixing is possible with a cotter bolt directly in the castle nut.