4AM21
Heavy-Duty Bolt
Mack

This robust bolt is engineered to provide secure fastening in demanding heavy-duty truck applications. Its high-strength construction ensures reliable performance under extreme loads and vibrations, making it essential for critical structural and mechanical connections. Properly installed, it helps maintain the integrity of chassis components, suspension systems, and other vital parts, reducing the risk of failure and downtime. The design facilitates easy installation and removal, supporting maintenance and repairs in tough environments. Source One Parts Center offers this bolt as a dependable solution for fleet managers and technicians seeking durability and safety in their hardware components. Its precise threading and material composition are tailored for longevity, even in harsh operating conditions, ensuring your truck remains on the road longer and performs optimally.