21AX28
Nut
Mack

This nut is a fundamental fastener used across various truck assemblies, providing secure and reliable connections between components. Its precise threading and robust construction ensure a tight fit, preventing loosening due to vibrations and operational stresses. Whether used in suspension, drivetrain, or body attachments, this nut maintains the integrity of critical connections, contributing to vehicle safety and performance. Its corrosion-resistant finish extends service life, even in challenging environments. Proper selection and installation of this nut are essential for maintaining the structural stability of your heavy-duty truck. Source One Parts Center supplies this high-quality fastener, designed to meet or exceed industry standards for durability and reliability, making it an essential part of your maintenance toolkit.