Screw length and quantity M3*4mm*20, M3*5mm*20, M3*6mm*20, M3*8mm*20, M3*10mm*20, M3*12mm*20, M3*16mm*20, M3* 20mm *20, M3*25mm*20. Wide range of application Cap head hex socket screw can be used as fasteners for household and office equipment, communication equipment, ship assembly or other machinery industries. They can be used in different occasions and are very durable.. Easy to use and store Screws and nuts are packed in 10 compartments, and packed in a transparent plastic box for convenient use and storage to meet your different needs.. Strong and durable, long service life The 12.9 grade alloy steel material with oxidized surface of hexagon head hexagon socket screw has good extension strength and resistance in many environments, strong and durable, and long service life.. Advantages Cap head hex socket screw is ideal for using in confined areas where the head needs to be flush or below the surface..
