This standard BS 1804-2:1968 Specification for parallel steel dowel pins is classified in these ICS categories:
21.060.50 Pins, nails
This British Standard specifies requirements for cylindrical parallel steel dowel pins used normally for the accurate location of components relative to each other.
Three grades are included:
Grade 1. Precision ground parallel dowel pins.
Grade 2. Ground parallel dowel pins.
Grade 3. Parallel dowel pins.
Based on European practice, but follows Part 1, with clause on ordering. Revised terminology. Three grades of diametral accuracy, two necessitate grinding.