ITEM NAME:515Pcs Mxsh4 M3/M4/M5 Stainless Steel Machine Screws And Nut Kits Hex Socke S7A5 515Pcs Mxsh4 M3/M4/M5 Stainless Steel Machine Screws And Nut Kits Hex Socke S7A5 DIY Supplies: Woodworking Drive Style: Hex Socket Screw Type: Machine Screws Head Style: Pan Screw Drive Type: Hex Socket Screw Head Type: Button Head (Round Head) color appearance, shines with metal luster, will fit well in different occasions. The length of button head screw is measured from underneath the head to the flat of the point. ensure its high hardness and corrosion resistance, anti-rust and durable. Widely used for industry, equipment, quadcopter, DIY crafts, home repairing and so on. colour:Silver material:stainless steel size:Type-Length-Quantity M3 Screws 8mm 30Pcs M3 Screws 12mm 30Pcs M3 Screws 16mm 30Pcs M3 Screws 20mm 30Pcs M3 Nuts / 125Pcs M4Screws 8mm 20Pcs M4 Screws 12mm 20Pcs M4 Screws 16mm 20Pcs M4 Screws 20mm 20Pcs M4 Nuts / 85Pcs M5 Screws 8mm 15Pcs M5 Screws 12mm 15Pcs M5 Screws 16mm 10Pcs M5 Screws 20mm 10Pcs M5 Nuts / 55Pcs Total / 515Pcs Package Contents: 1*set Hexagonal screw(515 pcs)