04247402280
Lock Nut
SAF-Holland

A lock nut designed to resist loosening under high vibration environments typical of trailer and heavy-duty axle applications. Its function is to maintain fastener preload and clamp force over time, supporting the integrity of assemblies that experience dynamic loads, thermal cycling, and road irregularities. VMRS 059-001-155 anchors it to the fastener family, while category 42789 places it within retention and locking hardware used across brake, suspension, and steering components. Benefits include improved assembly reliability, reduced maintenance intervals due to fewer service calls for retorquing, and enhanced safety margins in critical joints. For best results, pair with compatible bolts or studs and follow standard torque sequences and retention guidelines to ensure optimal lock performance in fleet operations.