Premium Class 12.9 Shoulder Screws – M3 to M8 Sizes
High-grade alloy steel construction ensures maximum strength and durability, ideal for heavy-duty applications. Precision-machined threads and smooth shoulder for secure fastening and alignment in machinery, automotive, and industrial equipment. Black oxide coating enhances corrosion resistance and extends lifespan in harsh environments. Perfect for CNC machines, robotics, and assembly jigs requiring tight tolerances. Globally sourced materials with strict QC for consistent performance. Buy in bulk at unbeatable wholesale prices—direct from manufacturer to you.