OBO Bettermann manufactures the 169 MS M20 locknut. It is metal and ecru-coloured, ideal for securing threaded connections. Typically used in electrical installations, the locknut ensures stable and reliable fixings. https://elecena.pl/product/28471061/obo-bettermann-2091623-ms-m20-metal-locknut-ecru-pg20-1pc 2025-04-17 https://elecena.pl/product/28471061/obo-bettermann-2091623-ms-m20-metal-locknut-ecru-pg20-1pc 2026-06-13