Specifications High-concerned chemical:None Dimensions:M3*20 DIY Supplies:Metalworking Model Number:M4x8/10/14/16/18/20/25/30/35mm Material:Stainless Steel Origin: China p{margin-block-start: 0; margin-block-end: 0} High-quality materials: Hexagon head bolts and nuts are made of high-quality 304 stainless steel, with high hardness, corrosion resistance, sturdiness and durability. In harsh environments, they also have good rust resistance and excellent oxidation resistance to ensure product performance Long time use The set contains: 30 pcs M4*8mm, 30 pcs M4*10mm, 20 pcs M4*14mm, 20 pcs M4*16mm, 20 pcs M4*18mm, 20 pcs M4*20mm, 20 pcs M4*25mm, 20 pcs M4*30mm , 20 pcs M4*35mm, 200 pcs matching M4 nuts, a total of 400 pcs M4 hexagon socket bolt and nut set Product features: hexagon socket head bolts with large contact area on the head and more balanced force. When tightening the screw, the wrench is not easy to slip out, better tightening, the thread is tight and the force is uniform, and it is not easy to deform and slide during use, better Plays the role of fastening. Widely used: Screw and nut kits are widely used for fixing parts of household appliances, furniture, automobiles and motorcycles, fixing communication equipment, electromechanical equipment, marine equipment, etc., and can also be used for fixing transportation equipment and construction equipment;