Features 1、Designed with 304 stainless steel material, providing strength and offers good corrosion resistance in many environments 2、Fixing component, for industrial and construction fasteners 3、Widely used in energy, electronics, electrical appliances, machinery, chemical industry, metallurgy, mold, hydraulic, and so on 4、This item kit includes M4 hex socket flat head screw bolts and hex nuts, is a ideal combination 5、This bolts screws and nuts come with a plastic box, so is convenient to storage Specification Features: Designed with 304 stainless steel material, providing strength and offers good corrosion resistance in many environments. Fixing component, for industrial and construction fasteners. Widely used in energy, electronics, electrical appliances, machinery, chemical industry, metallurgy, mold, hydraulic, and so on. This item kit includes M4 hex socket flat head screw bolts and hex nuts, is a ideal combination. This bolts screws and nuts come with a plastic box, so is convenient to storage. Specifications: Material: 304 stainless steel Model: Flat Head Hex Socket Weight: 238g Size and Quantity: M4*8mm 20PCS M4*10mm 20PCS M4*12mm 20PCS M4*16mm 20PCS M4*20mm 20PCS M4*25mm 20PCS M4 Nuts 60PCS Package Includes: 1 x 180pcs /set screws with box Package List