[M2 Metric] - Thread Dia: M2; Thread Pitch: 0.4mm. [Size] - Width: 4mm/0.16"; Height: 3mm/0.12". [Material] - Made of carbon steel, finish with zinc-plated for good rust resistance, corrosion resistance, and oxidation resistance.. [Feature] - With a nylon insert, these lock nuts greatly reduce loosening under vibrations and torque after long-term use, and have a good fastening effect.. [Application] - Great for replacing broken or missing nuts. Widely used for repairing furniture or household appliances, automobile, industries, workshops, engineering machinery, ship, DIY, handicrafts, etc..
