21AX440
Nut
Mack

This high-quality nut is designed to secure various components within the truck's assembly, providing a reliable fastening solution in demanding environments. Crafted from durable materials, it resists corrosion and maintains strength under vibration and load. Properly torqued nuts are vital for ensuring the safety and stability of critical parts, from engine mounts to chassis connections. Easy to install and remove, this nut simplifies maintenance procedures while ensuring a secure fit. Its precision threading guarantees compatibility with corresponding bolts, promoting consistent performance. Source One Parts Center offers this essential hardware to keep your truck operating safely and efficiently, even in the most challenging conditions.