High Quality Materials500PCS M3 M4 M5 Bolts and Nuts Kits Made of high quality 304 stainless steel,High quality 304 stainless steel provides high strength and good corrosion resistance in a variety of environments, ensuring long-term use. SpecificationsM3*8/12/16/20 30pcs each, M4*8/12/16/20 20pcs each, M5*8/12 20pcs each, M5*16/20 10pcs each, M3 nuts 120pcs, M4 nuts 80pcs, M5 nuts 50pcs, the nuts and bolts are complete and provide you with a perfect combination.We also equip you with 3 Allen keys. Simple Storage Box All screws, nuts have been stored in a storage box and neatly sorted so that you can easily find the part you want when you need it.And to prevent you from losing parts when needed. Use It is mainly used for fixing aluminum profiles, electrical appliances, chemicals, water, machinery and equipment, furniture and many other fields, the contact area is large,The Allen wrench is easy to tighten. Hexagon Socket Head The pressure area of the socket head screw is relatively large, the connection contact area is large, and the high stress contact area can easily tighten the nut. PROPERTIES -Material: High quality 304 stainless steel. -Exterior: Our products have been polished many times, smooth and flat, with rounded corners and will not cut your hands. -Nature: which has excellent corrosion resistance, heat resistance, cold resistance and high toughness. -Use: The main application area of stainless steel hex screw is very common in electronics, for electrical appliances, machinery and systems, furniture and many other fields. Name: 500pcs M3 M4 M5 304 Stainless Steel Hex Socket Head Cap Screws with Nut Set. Material: 304 Stainless Steel. Quantity: 500pcs Application: Mainly used for the fixing connection of aluminum profiles, such as the fixing connection between multi-slot square aluminum profiles. The compression surface of the hex socket head cap screw is larger than that of the hex socket head cap screw, the connection contact surface is large, the socket wrench is easy to fix, and the frame made of aluminum profiles can be firmly connected. . Type: Socket Head Cap (Metric) Thread: M3X0.5 M4X0.7 M5X0.8 Packing size: about 176*102*23 Product net weight: 530 grams Color: silver Delivery quantity: 500 pieces Warm tips: 1.Products contain small parts, keep them away from children to avoid accidental swallowing.