This Lubrinox self-locking hex nut with nylon insert is a lock nut featuring a non-metallic clamping element, which significantly reduces the risk of loosening due to vibration or mechanical stress. Made from stainless steel (A4) with metric threading, it meets DIN 985 and ISO 1051 standards. LUBRINOX® stainless steel fasteners are engineered to prevent thread galling—a common issue with standard stainless steel fasteners.