Enhance the security of your fastening applications with these Grade 8 Steel lock nuts. Designed for durability and strength, these thin nylon insert nuts feature a 1/2-13 thread size, ensuring a secure fit. The yellow zinc finish not only adds a layer of corrosion resistance but also makes them easily identifiable. Compliant with RoHS regulations, these nuts are an environmentally friendly choice for industrial and commercial use. Upgrade your fastening system with these high-quality lock nuts for reliable and long-lasting performance.