Nuts, stainless steel screws are widely used in the production and installation, repair and maintenance on environmental protection equipment, communication equipment, food equipment, chemical equipment, anti-fouling equipment, medical equipment, electronic products, building installation and other industries.
12.9 grade socket head cap screws surface cyanide blackening treatment, the product itself also has a certain anti-rust function. But this 12.9 grade high strength bolts series production Lv more used in the export of some equipment, customers in transit will encounter some relatively harsh environment will be 12.9 grade flat head hexagon socket head cap screws surface corrosion (such as shipping). The use of some equipment itself requires supporting products such as nickel-plated, zinc-plated treatment to strengthen the corrosion resistance of 12.9 high-strength bolts and the appearance of the degree of aesthetics (such as bread machinery, baking equipment, etc.). Our company will provide 12.9 grade high strength bolts to the customers at the same time will also be required to 12.9 grade high strength bolts on the surface of the galvanized or nickel-plated treatment.
Grade 12.9 hexagon socket head cap screws are one of the most commonly used series of grade 12.9 high strength bolts. Pan-Ao supply 12.9 hexagon socket head cap screws are generally used for mechanical properties of the higher requirements of the occasion, such as injection molding machinery, hydraulic equipment, mold assembly, etc. 12.9 hexagon socket head cap screws after heat treatment surface hardness can reach 39-44 degrees. 12.9 hexagon socket head cap screws of the production standards are referred to the German standard DIN912, GB / T70.1, American standard, British standard. to production. American 12.9 grade hexagon socket head cap screws supply range from #4 - 1-1/2, British 12.9 grade hexagon socket head cap screws supply range from 1/4 - 1-1/2 are sold in stock.