BSF All Metal Locking Nuts

BSF all-metal locking nuts are precision-engineered self-locking fasteners designed for British Standard Fine (BSF) threaded bolts and studs. Their robust, all-metal construction provides secure, vibration-resistant fastening without the need for nylon inserts, washers, or chemical thread-locking compounds. These nuts deliver consistent performance even in high-vibration, heavy-duty, or temperature-variable applications, making them ideal for industrial, automotive, and heritage machinery.

At Arun Fasteners, we offer a wide selection of BSF all-metal locking nuts in various sizes and finishes. They are perfect for classic vehicle restoration, industrial machinery, and precision engineering projects, providing a reliable, reusable fastening solution that minimizes maintenance while ensuring safety and durability. Whether assembling heavy equipment or maintaining vintage machinery, our BSF all-metal locking nuts deliver strength, security, and long-lasting performance.