480Pcs M3 M4 M5 Hex Socket Head Screws Metric Thread Hex Allen Drive Machine Nuts Metal Standard Fastener Hardware Alloy Steel Assortment Kit Bullet Point: Hex socket button head bolts screws nuts. This a set of small screws assortment kit made of carbon steel, sturdy and durable. This screws nuts set is well packed and assorted in a plastic box, worry free about damage or disorder.  The box design is nice and easy to take right screw out. Widely used in machinery, petrochemical, communications, chemical, construction, electric power, textile, sports equipment, papermaking, sewage treatment, shipping, automotive and other industries. Specification: Product name: head hexagon socket M3-M5 series screws Product material: carbon steel Product Quantity: 480pcs Surface treatment: oxidation and blackening Product use: Widely used in machinery, petrochemical, communications, chemical, construction, electric power, textile, sports equipment, papermaking, sewage treatment, shipping, automotive and other industries. Box size: 170*100*22mm Package includes: M3*8 30pcs Socket Cap Screws M3*10 30pcs Socket Cap Screws M3*12 30pcs Socket Cap Screws M3*16 30pcs Socket Cap Screws M3*8 20pcs Socket Cap Screws M4*10 20pcs Socket Cap Screws M4*12 20pcs Socket Cap Screws M4*16 20pcs Socket Cap Screws M5*8 10pcs Socket Cap Screws M5*10 10pcs Socket Cap Screws M5*12 10pcs Socket Cap Screws M5*16 10pcs Socket Cap Screws M3 nut 120pcs Socket Cap Screws M4 nut 80pcs Socket Cap Screws M5 nut 40pcs Socket Cap Screws