Caleb Components has been a supplier of slotted Roll Pins for a number of years. This type of Pin can also be known as Spring Tension Pins or Sellock Pins.
The full range is available to view online. Please use the links below to view the range:
Carbon Steel Spring Pins – https://springfasteners.co.uk/product-category/engineering-pins/spring-tension-pins-din1481/
Stainless Steel Spring Pins – https://springfasteners.co.uk/product-category/engineering-pins/spring-tension-pins-slotted-type-din-1481-stainless-steel/