s500PCS M3 M4 M5 Bolts and Nuts Sets made of high quality 304 stainless steel. High quality 304 stainless steel provides high strength and good corrosion resistance in various environments, ensuring long-term use.SpecificationM3*8/12/16/20 30 pieces each, M4*8/12/16/20 20 pieces each, M5*8/12 20 pcs each, M5*16/20 10 pcs each, M3 nuts 120 pcs, M4 nuts 80 pcs, M5 nuts 50 pcs. The nuts and bolts are complete and offer a perfect combination. We also include 3 Allen keys.Simple Storage BoxAll screws and nuts are stored in a storage box and neatly sorted so you can easily find the part you need. Helps prevent loss of small components.UsageIdeal for fixing aluminum profiles, electrical appliances, machinery, equipment, furniture, and other applications. The large contact area ensures secure connections. Allen key allows for easy tightening.Hexagon Socket HeadThe socket head screw has a relatively large pressure area, providing a wide connection surface. High-stress areas allow for secure nut tightening.Properties - Material: High quality 304 stainless steel - Finish: Smooth and polished surface with rounded edges, safe to handle - Features: Excellent corrosion resistance, heat resistance, cold resistance, and high toughness - Applications: Commonly used in electronics, electrical appliances, machinery, systems, and furnitureName: 500pcs M3 M4 M5 304 Stainless Steel Hexagon Socket Head Cap Screw with Nut Set Material: 304 Stainless Steel Quantity: 500 pcs Type: Pan Head Socket (Metric) Thread: M3X0.5, M4X0.7, M5X0.8 Packing Size: Approx 176x102x23 mm Product Net Weight: 530 grams Color: Silver Package Quantity: 1 Pack of 500 pcsApplicationMainly used for fixing and connecting aluminum profiles, such as square aluminum profiles with multiple slots. The hexagon socket head cap screw provides a larger compression surface, ensuring a strong and stable connection. Compatible with socket wrenches for easy installation. Ideal for securely assembling aluminum profile frames.Warm Tips 1. This product contains small parts. Keep away from children to avoid accidental swallowing.