Description:1. Feature: Button head machine screws, hex socket drive. Metric machine screws for universal use.2. Material: Made of alloy steel, black oxide coating finish, wear-resistant, anti-corrosion, and it is smoother to use.3. Application: Widely used where fastening is required, the assembly and maintenance of households, machine tools, construction, and DIY projects. Such as household hardware, electrical products, mechanical equipment products, etc.Specification:Product Name: Hex Socket Button Head BoltsMaterial: Alloy SteelSurface Treatment: Black Oxide CoatingPerformance Grade: 10.9Color: BlackDimension: M4 x 18mmRod Length(Under Head): 18mm / 0.71"Pitch: 0.7mm / 0.03"Inner Hex Width: 2.5mm / 0.1"Screw Head Size: 7.5 x 2.1mm / 0.3" x 0.08"(Dia.*Thickness)Package Content:50pcs x Hex Socket Bolts.
eBay