A versatile multi-size set of nylon-insert hex lock nuts includes nine common thread sizes—from 1/4″-20, 5/16″-18 and 3/8″-16 to #8-32, #10-24 and M3×0.5, M4×0.7, M5×0.8, M6×1.0—ideal for a wide range of fastening needs. Crafted from premium 304 stainless steel with a sleek black PVD coating, these nuts deliver exceptional corrosion resistance and long-lasting durability in harsh environments. Each nut features a resilient nylon collar that deforms elastically over bolt threads to maintain prevailing torque and resist loosening under vibration. All pieces come organized in a sturdy, compartmentalized plastic carrying case for effortless storage, quick access, and on-the-go convenience. Perfect for furniture assembly, automotive maintenance, electronics projects, and general DIY tasks, this assortment ensures you always have the right lock nut at hand.