China Bolt Manufacturers, Suppliers, Factory

The 8.8 grade Hexagon Fit Shank Bolts are a type of high-strength mechanical fastener. They undergo quenching and tempering heat treatment to meet the 8.8 grade strength standard, and their surfaces are usually treated with blackening. The key feature of these screws lies in the presence of a precise threaded section in the middle. During installation, they adopt transitional or interference fits with the threaded holes, enabling precise positioning and gap-free connection of components. Compared to ordinary bolts, their lateral shear resistance is significantly stronger. They mainly rely on their own shear strength rather than pre-tightening friction to bear the shear force. This product is widely used in machine tools, automobiles, molds, and automation equipment, which have high requirements for position accuracy and shear-bearing capacity in critical connection parts.

Carbon steel/alloy steel automotive Car Wheel Bolts, classified according to strength grades 8.8/10.9/12.9, provide 60 ° conical, spherical, and planar contact types. The keyway and wheel hub hole are fitted with interference fit for precise positioning. Suitable for passenger cars, light trucks, and heavy trucks, high-strength material selection, anti loosening and rust prevention, stable and reliable road testing.

The stainless steel chemical anchor bolts are made of high-quality 304 stainless steel, featuring anti-corrosion and anti-oxidation properties. They are based on the principle of chemical bonding and curing, without generating expansion stress. They possess high tensile and shear strength, stable anchoring performance, and a long service life. They come in various specifications and are easy to install. They are widely used for post-installation anchoring and fixation of concrete, stone, and other substrates, and are applicable to curtain wall engineering, equipment fixation, structural reinforcement, and marine corrosive environments.

8.8 grade high-strength carbon steel, with a blue and white zinc surface, comes with all the bolts, spring washers, flat washers, and nuts in one box. A set of four pieces, which can be used directly without the need for separate washers and nuts. The bolts are made of high-quality carbon steel, so you can use them with confidence. Specifications ranging from M6 to M20 can be supplied in sets.

The Cup Head Square Neck Bolts is a carriage bolt that complies with the standard DIN 603. It is made of medium carbon steel and undergoes heat treatment and surface blue-white zinc electroplating process, resulting in a uniform silver-white anti-corrosion coating. The bolt head is a circular cap (Cup Head), and a square neck extends downward. When installed, it can be inserted into wood or pre-made square holes, effectively preventing the bolt from rotating and achieving single-sided tightening. The specifications range from M6 to M20, and are widely used in wooden structures, furniture manufacturing, outdoor fences, vehicle chassis, and agricultural machinery equipment connection scenarios.

Jinghong Factory specializes in the production of Stud Anchors, with specifications ranging from M6 to M16 and lengths available from 50mm to 150mm. Made from high-quality carbon steel (Grade 4.8/8.8) and 304/316 stainless steel, the products can undergo blue-white zinc, colored zinc, or hot-dip galvanization treatments. Suitable for heavy-duty anchoring, these products are widely used in various applications. Standard specifications are available in stock, and non-standard customizations are supported.