100 pcs M8 (8 mm) Square Section Spring Washers — galvanised steel, metric, square section split lock spring ring Key benefits Prevents fastener loosening: the split lock design adds spring tension and bite to resist rotation under vibration or dynamic loads. Stable seating and increased bearing area: square section shape provides a larger contact surface than round washers for better load distribution. Corrosion-resistant and durable: galvanised steel construction helps protect against rust for indoor and outdoor use. Ready for metric fasteners: sized for M8 (8 mm) bolts, screws, studs and nuts; supplied in a convenient 100-piece pack for multiple projects. What it does Acts as a locking washer that maintains preload and reduces the chance of nuts or bolts backing off. Fits under nut heads or bolt heads to improve grip and stability in assemblies using M8 threaded hardware. Compatibility and specifications Size: M8 (8 mm), metric dimensions Quantity: 100 pieces per package Material: galvanised steel (zinc-coated) Type: square section split lock spring ring (square section spring washers) Performance notes Effective in assemblies subject to vibration or thermal cycling where maintaining tension is important. Galvanised finish provides basic corrosion protection; suitable for general-purpose and outdoor applications but not a substitute for stainless steel in highly corrosive environments. Typical applications Automotive and light machinery: securing components on engines, mounts, and panels that experience vibration. Outdoor fixtures and fencing: locking nuts on gates, hinges, brackets and metalwork. General assembly and repair: electrical enclosures, brackets, furniture, and equipment that use M8 fasteners. Important: please check the size (M8/8 mm) and quantity (100 pcs) of square section spring washers before purchase to ensure compatibility with your fasteners.