Our M20 high-strength bolts are made of high-quality carbon steel or alloy steel, processed through integral quenching and tempering heat treatment, which effectively improves the overall hardness, structural toughness and load-bearing stability of the bolt. Compared with ordinary bolts, this high-strength bolt has higher tensile and shear resistance, no plastic deformation under heavy load, and excellent resistance to loosening, pressure resistance and impact resistance.
The product adopts precision rolling thread process, with standard thread pitch, smooth and full tooth shape, high matching accuracy with nuts and gaskets, realizing uniform stress and firm connection. The surface can be treated with galvanizing, blackening, anti-rust oil and other processes to provide excellent oxidation and corrosion resistance, adapting to indoor, outdoor, humid and outdoor wind and sun exposure working environments.
All M16 high-strength bolts comply with GB/T1228, DIN and ISO international standards, with stable grade performance and low performance discreteness. Each batch of products undergoes strict tensile test, hardness test and dimensional inspection to ensure structural safety and long-term stability. It is a core matching fastener for high-load and high-precision engineering connection projects, with the advantages of convenient installation, strong interchangeability and long service life.
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