DIN 1471 (GP 1)

Full length taper grooves used to fix two or more components together, but with less insertion than DIN 1473.

DIN 1472 GP 2)

Half length taper grooves used where part of the assembly must be a free fit

DIN 1473 (GP 3)

Full-length parallel grooves used to fix two or more components together with maximum rigity

DIN 1474 (GP 4)

Half-length reverse taper grooves used where the ungrooved portion acts as a stop or handle

DIN 1475 (GP 8)

Third length centre grooves used on hinges or clevises where the two ends must act as pivots