Handles and locks are among the most frequently used building components, yet they receive remarkably little attention during the specification process. A typical interior door handle or window operator may be used tens of thousands of times over its service life, serving as the primary interface between building occupants and the assembly. Despite this constant use, these components are often selected based on appearance alone, with insufficient consideration given to material quality, mechanical durability, or long-term performance.

This article details the role of hardware accessories such as stainless steel hinges, handles and hinges in doors and windows. When designing windows in buildings, it is often considered from the wind resistance, water tightness, thermal insulation, heat insulation and sound insulation of the area where the house is located. However, the above required physical and mechanical properties of doors and windows are closely related to hardware accessories.