- Available in sets of 2, 5, or 25 pieces, these 304 stainless steel black hex insert lock nuts are designed for secure fastening across various applications. - Compatible sizes include M2, M2.5, M3, M4, M5, M6, M8, M10, M12, and M16, making them versatile for different projects. - The self-locking feature ensures dependable performance by preventing loosening over time, providing peace of mind in assembly and maintenance. - Each lock nut is constructed from durable 304 stainless steel, ensuring corrosion resistance and longevity, even in demanding environments. - For practical applications, consider using these lock nuts in furniture assembly, automotive repairs, or machinery fixing where secure and lasting connections are essential. - Specifically, the pack of 25 M3 lock nuts is ideal for projects requiring consistent and reliable fastening solutions. - Count on the black finish for a sleek appearance that also helps to resist wear and tear, enhancing the durability of your projects.