DIN 94 cotter pins are U-shaped metal wires commonly used to secure nuts, pins, or other fastening elements. After being passed through a hole, the ends of the cotter pin are bent to secure it in place. They are made from materials such as stainless steel, carbon steel, or brass, and can be coated for corrosion resistance. Cotter pins are widely used in automotive, machinery, and heavy industrial applications to prevent the loosening of mechanical parts. They are easy to install and provide a strong locking mechanism.
| Boy/ Ø | 1 | 1,2 | 1,6 | 2 | 2,5 | 3,2 | 4 | 5 | 6,3 | 8 | 10 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| d max | 0,9 | 1 | 1,4 | 1,8 | 2,3 | 2,9 | 3,7 | 4,6 | 5,9 | 7,5 | 9,5 |
| d min | 0,8 | 0,9 | 1,3 | 1,7 | 2,1 | 2,7 | 3,5 | 4,4 | 5,7 | 7,3 | 9,3 |
| a max | 1,6 | 2,5 | 2,5 | 2,5 | 2,5 | 3,2 | 4 | 4 | 4 | 4 | 6,3 |
| a min | 0,8 | 1,25 | 1,25 | 1,25 | 1,25 | 1,6 | 2 | 2 | 2 | 2 | 3,2 |
| b | 3 | 3 | 3,2 | 4 | 5 | 6,4 | 8 | 10 | 12,6 | 16 | 20 |
| c min | 1,6 | 1,7 | 2,4 | 3,2 | 4 | 5,1 | 6,5 | 8 | 10,3 | 13,1 | 16,6 |
| c max | 1,8 | 2 | 2,8 | 3,6 | 4,6 | 5,8 | 7,4 | 9,2 | 11,8 | 15 | 19 |