Sturdy Material and Rust-Resistant Finish - Constructed from high-quality carbon steel, these rivet nuts are robust and sturdy, ensuring a prolonged service life. The gold zinc finish not only enhances their appearance but also provides excellent protection against rust and corrosion, extending their usability in various environments. Comprehensive Rivet Nut Kit - Each package includes 50 pieces of 5/16-18 rivet nuts, offering a sufficient supply for multiple projects. This ample quantity ensures you have enough rivet nuts for replacements and continuous use. Efficient and Secure Design - The multi-grip, pre-bulbed, flat head, and knurled body design of the rivet nuts ensure a stable and secure fit. This design allows for easy installation and reduces the likelihood of rotation, ensuring a stronger fixation with minimal installation effort. Easy To Install - Pre drill a suitable hole according to the size of the rivet nut installation hole, then insert the nut and tighten it with rivnut tool. The simple installation process and mechanical internal thread design make them easy to use, providing a reliable and user-friendly solution for both industrial and DIY projects. Wide Range Of Applications - these steel rivet nuts are ideal for automotive, construction, electric appliances, and furniture. Their robust construction makes them a practical choice for secure riveting on various sheets, including thin iron cabinets, roofs, and equipment casings. ASIN B0D95BL7BP Brand AOKLIT Color gold Model A-105 Size Name 0.3125-18 Metal Type Carbon Steel Drive Style Spline Item Weight 0.5 Pounds Part Number A-105 Thread Size 5/16 -18 Thread Type Unified National Coarse Finish Types Zinc Plated Manufacturer AOKLIT Thread Class Coarse Thread Style Left Hand Fastener Type Insert Material Type Carbon Exterior Finish Zinc Item Dimensions 2 x 2 x 2 inches Number Of Items 50 Thread Coverage Partially Threaded Number of Pieces 50 Screw Head Style Flat Inside Thread Size #1/2 Compatible Groove Diameter 0.31 Inches