A2 Stainless Steel Serrated Nyloc Flange Nuts - Metric Sizes M3 M4 M5 M6 M10 (External Hex)

Need nuts that won't shake loose? These A2 stainless steel serrated nyloc flange nuts are built to stay put! They combine two locking features: a nylon insert (that's the 'nyloc' part) that grips the threads, and a serrated flange on the bottom that bites into the surface. Made from A2 grade stainless steel, they're corrosion-resistant and durable. Available in metric sizes: M3, M4, M5, M6, and M10, with an external hex drive so you can tighten them with a standard wrench or socket. Perfect for automotive, machinery, bikes, or any project where vibration is a concern. They're brand new from Spalding Fasteners, come in original packaging, and are way more reliable than regular nuts. If you're tired of re-tightening bolts, these lock nuts are a solid upgrade. Just thread 'em on and enjoy peace of mind!