This low-profile hex nut is manufactured to DIN 439-2 and ISO 4035 standards and is used as a thin jam nut to keep other nuts from vibrating loose. Made from steel in property class 040, it offers a reduced load capacity. It features a left-hand (LH) metric thread, making it ideal for components that rotate clockwise. The electro-galvanized zinc finish is designed for indoor use or applications with very mild environmental exposure.