This low-profile hex nut from Lubrinox is a stainless steel fastener with metric threading. The nut is manufactured to DIN 439-2 and ISO 4035 standards and falls under strength class 035—a reduced load rating derived from strength class 70 due to the product's geometry. Lubrinox® stainless steel fasteners are engineered to prevent thread galling (cold welding), a well-known issue that often occurs with standard stainless steel fasteners.