prEN ISO 13670

This document specifies the characteristics of grooved reverse-taper pins with one quarter-length progressive grooves on both sides (close-ends), with rounded or chamfered pin ends, in steel and stainless steel, with nominal diameters 2 mm to 25 mm.
These grooved pins are designed to fulfil the main following functions:
— relative rotation of the assembled parts,
— locking of two (or more) parts,
— positioning.
The general requirements (including principles for grooved pins and assembly) are specified in ISO 13669.