SAE Black Lock Nuts: The 110-Piece Black Nylon Insert Locknut Assortment Kit features a comprehensive selection of SAE black lock nuts, including eight different sizes: 6#32 (20 pcs), 8#32 (20 pcs), 10#24 (15 pcs), 10#32 (15 pcs), 1/4-20 (20 pcs), 5/16-18 (10 pcs), 3/8-16 (8 pcs), and 1/2-13 (2 pcs). This assortment is perfect for a variety of applications, from furniture DIY projects to large-scale building construction, ensuring you have the right size lock nut at your fingertips to complete any job efficiently. 304 Stainless Steel: Crafted from high-quality 304 (18-8) stainless steel, these lock nuts provide exceptional strength and durability, coupled with excellent corrosion resistance. Unlike galvanized nuts, which can succumb to rust and oxidation over time, our stainless steel lock nuts are designed to withstand harsh environments, offering a longer service life and reliability for both indoor and outdoor projects. Nylon Insert Lock Nuts: Each black lock nut is equipped with a nylon insert that snugly fits with the bolt threads, utilizing the elasticity of the nylon to provide superior friction resistance. This feature significantly enhances vibration resistance, abrasion, and shear strength, making them ideal for repeated use in dynamic environments. Convenient Storage: The assortment kit comes with a clear storage box that organizes the eight different sizes of lock nuts, making it easy to store and access them as needed. This thoughtful design minimizes the risk of losing or mixing up the nuts during use, ensuring that you can work efficiently without interruptions. Wide Application: These lock nuts are versatile and commonly used in various applications, including securing instrument and equipment components, linking pipes, and supporting structural elements. They are suitable for maintenance or use in diverse fields such as automotive repair, mechanical industries, furniture decoration, and small repairs around workshops and construction sites.