XB-0103
Locknut 1/2-13
SAF-Holland

Engineered for secure, vibration-resistant fastening in heavy-duty applications, this locknut is sized for standard fastener assemblies where maintaining preload and resisting loosening are critical. Its primary function is to lock a mating fastener in place, countering dynamic torque fluctuations caused by rough roads, heavy loads, and transient braking forces. The design emphasizes reliable engagement once torqued to specification, helping to prevent nut back-off and subsequent joint degradation that could compromise critical system alignments. In service, it supports robust integrity of attachment points across suspensions, brackets, and equipment mounts where repeated cycles and sustained vibration are routine. VMRS code 053-007-035 anchors its classification within the component family of fasteners, aiding maintenance planning and inventory organization. While cross references are not listed, this part is commonly matched with compatible studs or bolts on standard 1/2-inch thread assemblies in fleet maintenance programs. Category context: 42594 places it within general fastener hardware used in a broad range of truck assemblies, ensuring compatibility with standard tooling and replacement intervals for reliable field performance.