10/20/30/50/100 pcs Toothed Washer Stainless Steel Serrated External Toothed Lock Washer (M3, M4, M5, M6, M8, M10, M12, M16)(M12(20PCS))

Material: They are made of stainless steel can provide good strength, corrosion-resistant, hardness and abrasion performance. Good Performance: 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. Application: Ideal for a wide range of fixing applications, mainly used for occasions with vibration load or alternating load, tighten to prevent loosening. 8 specifications are available: Eight kinds of serrated washer, M3, M4, M5, M6, M8, M10, M12 and M16. Quantity: There are 10/20/30/50/100 pieces spring washer flats for your choice.