These glass fibre-reinforced locknuts made of nylon with 30% glass fibre are available from Bülte with PG threads in sizes PG7 to PG48. The nuts without collar are similar to DIN 43620.
Thanks to the glass fibre reinforcement, these locknuts stand out for greater strength and impact resistance.
A locknut is used to additionally secure an existing nut and prevent it from unscrewing. Locknuts with PG threads are mainly used in electrical installations, particularly for cable connections, electrical cabinets, etc., with PG cable glands.