The Pin (OEM Part No. 3128318532) is a spare part compatible with Boomer 291  and S1D underground drilling rigs. Manufactured from high-strength alloy steel, it is categorized as a mechanical component used in the pivot and linkage connection system at the pin mount position. This precision-machined pin provides secure mechanical connection between moving assemblies, supporting accurate movement transmission and structural stability during drilling operations. Designed to withstand heavy loads, vibration, and repeated movement cycles, the pin ensures reliable performance, reduces connection wear, and extends the service life of mining rig mechanical assemblies.