This standard BS EN ISO 8752:2009 Spring-type straight pins. Slotted, heavy duty is classified in these ICS categories:
21.060.50 Pins, nails
This International Standard specifies the characteristics of slotted spring-type straight pins, made of steel or of austenitic or martensitic stainless steel, heavy duty, with nominal diameter, d1, from 1 mm to 50 mm inclusive.
NOTE The nominal diameters have been chosen in such a way that pins can be fitted one into the other or combined with pins, light duty, in accordance with ISO 13337.