The ASSORTMENT- LOCKNUTS UNC features 450 pieces of high-quality stainless steel nylon insert lock nuts, ranging in sizes from 6-32 to 1/2"-13. Packaged conveniently in a 12-hole metal parts box, these lock nuts provide reliable fastening solutions for automotive and industrial applications. The nylon insert ensures a snug fit and prevents loosening due to vibration, making them perfect for use in demanding environments. Trust this assortment to enhance your inventory and improve your assembly processes.