uxcell Hex Lock Nuts - M5 x 0.8mm Carbon Steel Nylon Insert Self-Locking Nuts for Fasteners, 50Pcs Black

[M5 Metric] - Thread Dia: M5; Thread Pitch: 0.8mm | [Size] - Width: 8mm/0.31"; Height: 5mm/0.2" | [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.