DIN 11024 Spring Cotter Pin (Linch Pin), Form E

The spring cotter pin (linch pin) is manufactured in accordance with the European standard DIN 11024. This is a special type of fastener providing secure retention in a hole. It is used in mechanical engineering and other industrial sectors.

The product consists of two parts: a straight metal shank and a spring element that provides retention. The straight part is inserted into a prepared hole, while the spring part secures the part and prevents its displacement due to the spring effect. Form E has no coils in the spring part, whereas form D contains two coils.

Manufacturing and application features

Cotter pins made of carbon steel are the most common. For corrosion protection and extended service life, they may be electroplated with zinc coating, which protects the metal from the destructive effects of the environment. Cotter pins are also made of stainless steels A2 and A4: these alloyed steels are resistant to chemically aggressive acidic environments. Stainless steel cotter pins are installed where the joint is subject to constant corrosive exposure.

Spring cotter pins of the DIN 11024 standard have the following characteristics:

• Length of the straight part — from 42 to 150 mm; this is the main parameter when selecting.
• Head size — from 20 to 30 mm.
• Metal shank diameter — from 2.5 to 8 mm.

The main purpose of the cotter pin is for use in joints subject to shock, vibration or dynamic loads. The cotter pin is inserted into a hole to prevent the fastener from spontaneously loosening and to ensure secure retention of the joint. A hole of the required diameter must be prepared before installation.

Spring cotter pins are used in various industrial sectors: mechanical engineering, manufacturing of machine tools and other industrial equipment, automotive manufacturing. Such products are essential for reliably securing parts and are in steady demand. They are used in the assembly of vehicles, including special-purpose equipment and various mechanisms.

Ordering terms at FLOK

FLOK supplies fasteners that meet the requirements of European standards. Supplies are provided on wholesale terms, in small and large wholesale quantities. Review the product range and place your order online: FLOK supplies products in a wide range of sizes, with the option to select compatible equivalents under other standard systems.