The 1.1/4UNC Lock Nut with Nylon Insert from the Qualfast product range is designed to provide secure fastening solutions in various applications. Engineered for reliability, these lock nuts feature a nylon insert that enhances grip and prevents loosening under vibration, ensuring a stable and durable connection. Ideal for both professional and DIY projects, this product range offers peace of mind with its high-quality construction, making it suitable for a wide array of uses in automotive, construction, and machinery settings. Trust in Qualfast for dependable performance and longevity. Features: Driving Features: Hexagon Thread Size: 1-1/4 Grade: 8 Surface Treatment: Zinc Plated Yellow Passivated Material: Steel Applications: - Ideal for securing bolts in machinery and automotive applications to prevent loosening due to vibration. - Suitable for use in construction projects where reliable fastening is essential for structural integrity.