The FKB SJNL12M is a steel jam nut designed for left-hand applications, sold in convenient lots of 25 pieces. This jam nut is constructed from high-quality steel, ensuring durability and strength for various mechanical systems. Its design allows for secure fastening and prevents loosening under vibration, making it ideal for automotive and industrial applications. The dimensions are optimized for compatibility with standard threaded connections, facilitating easy installation. This jam nut is a reliable choice for ensuring secure connections in a variety of settings.