21AX790
Nut
Mack

This high-quality nut is a fundamental fastener designed to secure components firmly in place. Its precise threading and durable material ensure a tight fit, preventing loosening due to vibrations or operational stresses common in heavy-duty trucks. Whether used in engine assemblies, chassis, or accessory mounts, this nut provides reliable clamping force to maintain structural integrity. Its corrosion-resistant finish extends service life, especially in harsh environments. Proper fastening with this nut is essential for vehicle safety, stability, and performance. Source One Parts Center supplies this dependable fastener to support your maintenance and repair needs, emphasizing quality and durability.