Technifast's range of split cotter pins are stocked in diameters of 1mm to 13mm in mild steel (usually zinc plated), stainless steel A4 and brass. Our specifications follow DIN 94, which is equivalent to ISO 1234 and BS 1574. Due to the loose fit required for cotter pins, the metric range doubles for inch sizes. Cotter pins are designed to be easy to insert into pre-drilled components and can also be applied around a shaft.


Cotter Pins


  • Cotter Pin ISO 1234
  • Cotter Pin DIN 94
  • Cotter Pin BS 1574


  • Mild Steel, Zinc Plated
  • Stainless Steel A4
  • Brass