? High Quality Stainless Steel Internal Tooth Star Lock Washers Set
? Set Includes 8 Most Used Sizes: M2 M3 M4 M5 M6 M8 M10 M12
? Made of 304 Stainless Steel Material, Very Good Corrosion Resistance, It Can Be Used in a Humid Environment.
? Package Quantity: 300-Piece, All of Washers Will Be Packed in A Sturdy Transparent Plastic Case, Can Be Use for A Storage Box
? A Lock washer exerts a spring force between the fasteners head and the substrate, which maintains the washer hard against the substrate and the bolt thread hard against the nut or substrate thread, creating more friction and resistance to rotation.