Products

Carbon steel coated Dacromet carriage bolt, round head with square neck. When tightening the nut, the square neck fits into the groove, and the bolt does not rotate on its own. It can be locked on one side. Dacromet coating, no red rust after 720 hours of salt spray.

DIN 915 Hexagon Socket Set Screws with Dog Point are made of 45H carbon steel and undergo blackening treatment. The product features high strength, wear resistance and excellent surface anti-rust performance. The design of the internal hexagon and cylindrical end of the product is optimized for axial positioning in narrow spaces, and can reliably fix shaft parts (such as gears, bearings, pulleys, etc.), making it an indispensable fastening component in mechanical manufacturing, automation equipment and precision instruments.

The DIN 7993A (RW type) steel wire retaining ring for shafts is made of 65Mn spring steel and is heat-treated to possess high elasticity and fatigue resistance. The surface is typically treated with blackening or phosphating. Its key feature lies in the use of circular cross-section steel wires bent into shape, which is installed in the shaft end groove and achieves axial locking through its own elastic retraction. Compared to flat wire retaining rings, the circular wire design causes less wear on the shaft groove and provides more uniform clamping force. This product is widely used in mechanical manufacturing, automotive gearboxes, machine tool spindles, and other scenarios where axial positioning and anti-detachment of bearings or transmission components are required.

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.

Disc Shaped Embossed Washing is made of spring steel stamping, with a surface treated with zinc plating or blackening. Equipped with a circle of radial embossed teeth, installed under the nut and pressed, the teeth bite tightly against the contact surface. It is much more anti loosening and anti slip than a smooth washer, suitable for situations with tight space and anti slip requirements.

Jinghong Factory specializes in producing Trox Low Cylindrical Head Screws, which are made of high-quality carbon steel and have a short cylindrical head. Trox groove with blue and white zinc treatment on the surface, suitable for assembly occasions with limited headroom. The Trox groove drive is not easy to slip and is suitable for quick locking of pneumatic or electric tools.