Cover plate 823 Application For situations where handle holes need to be covered. Material Stainless steel. Installation Screw Use no. 6 (3.0 mm) TKFX/DIN 7995. For outside mounting of ASSA 823, use the corresponding one-way screw. Triangular pin 56For espagnolette operated with triangular key ASSA 145. N… Security device ASSA 805Type-approved as child-safe security fitting. Used instea… Triangular handle 811Used for operation of ASSA 805. Do you want to create a safe lock environment? ASSA OEM has created "The lock guide by ASSA OEM", and it's made to give you knowledge and tips about approved lock sets. We really encouring poeple to read our tips and guidelines here: The lock guide Want to download our product catalogues? If you prefer to download our product catalogue - you can download it here! We also provide instructions, declarations and other documents in our download documents section.Check it out!