The Pin (OEM Part No. 3128309850) is a spare part compatible with Boltec 235, Boltec-MC, and Boomer-MD underground drilling rigs. Manufactured from high-strength alloy steel, it is designed as a mechanical component for the pin assembly position in pivot and linkage connection systems. The pin provides secure connection, rotation support, and accurate alignment between mechanical components, ensuring smooth movement and reliable operation. Its durable construction offers excellent wear resistance and strength under heavy loads and harsh underground conditions. This OEM replacement pin helps maintain equipment stability and extends service life in drilling and bolting applications.