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Black oxide hex bolt with spring washer provide excellent fastening performance and easy-to-operate wrench contact surface with their sturdy hexagonal head design, while spring washers ensure the reliability of the connection through their elastic properties that effectively prevent the loosening of nuts in vibrating environments.

Features

High strength: Black oxide hex bolt with spring washer made of 8.8 grade alloy steel with excellent tensile strength and shear resistance, suitable for a variety of high-load connection scenarios.

Anti-loosening design:The spring washers in the assemblies can provide continuous elasticity after the jam nut is tightened, increasing the friction between the jam nut and the bolt, effectively preventing loosening.

Easy to install: the hexagonal head design facilitates the use of wrenches for tightening and dismantling, improving work efficiency.

Corrosion resistance:the surface is oxidized and blackened,which is not only beautiful, but also improves the corrosion resistance of the product to a certain extent.

Advantages

Black oxide hex bolt with spring washer in the combination of hexagon head bolts and spring washers including widely range of sizes, with thread diameters ranging from M3 to M24, and lengths ranging from 10mm - 300mm, which can meet your different installation needs.

The dimensions of the spring washers in the black oxide hex bolt with spring washer  are precisely adapted to the matching bolts, with the inner diameter closely matching the thread diameter of the bolts, and the outer diameter being reasonably designed to provide sufficient elastic tension without taking up too much space for installation.

Application range

Mechanical manufacturing: In the assembly of various mechanical equipment, such as machine tools, engines, transmission devices, etc., our black oxide hex bolt with spring washer is used to connect various parts to ensure the normal operation and stability of the equipment.

Construction industry: Whether it is the framework of the steel structure building, or construction equipment installation and fixing, can see our hexagonal head bolts and spring washers combination of products. To provide reliable connections for the building structure, to protect the safety of the building.

Automotive industry: In the manufacturing process of automobiles, from the connection of the body structure to the engine, chassis and other key parts of the fixed, our hexagonal head bolts and spring washers play an important role in combinations to meet the automotive industry's strict requirements for fastening performance.