ISO/FDIS 21174:2025

This ISO standard specifies the terminology for hardware used in windows and pedestrian doors. Hardware in this document refers to building hardware. This document mainly only refers to the terminology of hardware used for the connection between window sash/casement, door leaf, and their corresponding frames as well as the hardware used for operating the window sash/casement and door leaf. This document is neither for the terminology of fixing elements used as a means of connecting the hardware to the door and window sash/casement profile or frame, nor the hardware used for connection between door/ window frame and their openings, such as screws, bolts, etc. This document does not set out physical definitions related to performance requirements and associated test methods of the hardware.