Cross-slot drive interface
The head is equipped with a standard cross-slot or diamond-shaped slot. The slot type is formed by a stamping mold in one step, with an appropriate depth. It fits tightly with the screwdriver and is not likely to slip during tightening, making it convenient for later disassembly and maintenance.
Multi-level stepped positioning structure
The shaft body is designed as two or three stepped sections. The large-diameter section is closely fitted with the mainboard hole for precise positioning. The middle-diameter section is in transitional cooperation with the auxiliary board, and the small-diameter section serves as the introduction guide. The coaxiality of each section is ≤ 0.05 millimeters.
Precise guiding end
The length of the end cylindrical section is 3 to 8 millimeters. The diameter of the end is 0.5 to 1 millimeter smaller than the smallest step. The end face is chamfered or has a spherical head treatment. It is smooth for introduction without damaging the hole wall, and can also be used as a short support for the rotating shaft.
Galvanized anti-corrosion protection
The surface is treated with blue-white galvanization. The coating thickness is 8 to 12 micrometers. The salt spray test lasts for more than 48 hours. The white passivation film is beautiful and easy to visually inspect the assembly status, and complies with RoHS environmental protection requirements.
Full-length non-threaded design
Different from the threaded locking of bolts, this pin relies on stepped interference fit or snap connection to achieve fixation. There is no risk of thread slippage without threads. In vibration environments, it is more reliable to use with lock springs or tensioning structures.

Cold heading process offers high cost-effectiveness
The multi-station cold heading machine can produce 3 to 5 pieces per second, with a material utilization rate exceeding 85%. Compared to CNC turning processing, the cost is reduced by more than 60%, and the dimensional consistency is better. It is particularly suitable for large-scale orders of over 100,000 pieces.
Complete metal flowline reinforcement
During the cold heading process, the metal fibers are not cut and are continuously distributed along the stepped contour. The shear strength at the junction of the head and the shaft is 30% to 50% higher than that of the turned parts, making it less prone to fracture when subjected to impact loads.
Surface dense and wear-resistant
The cold heading surface is densified by mold extrusion, with a hardness slightly higher than the base material. The roughness Ra can reach below 1.6 micrometers. As a positioning pin in contact with the mating hole, it has excellent wear resistance and maintains stable mating accuracy after repeated insertion and extraction.
Large head bearing area
The large-diameter flat round head provides sufficient axial positioning and bearing area to prevent the pin from penetrating the thin plate. The transition arc between the head and the shaft is full, dispersing stress to avoid stress concentration and cracking.
Quick assembly with good guiding performance
The small-diameter end guide head is introduced into the hole first, automatically correcting the position deviation. The subsequent steps pass through the steps successively to achieve progressive positioning. The assembly cycle only takes 2 to 3 seconds, suitable for automated production lines.

Appliance shell assembly
The positioning clips for the plastic shells and metal frameworks of washing machines, refrigerators, and air conditioners, with low cold-bending costs suitable for large-scale production, and the large flat heads fit closely with the appearance surfaces without protrusions.
Automobile interior connection
The plastic parts for instrument panels, door panels, and seats and the positioning pins for metal brackets, with a stepped structure achieving synchronous alignment of multiple layers of parts, improving the assembly cycle of the production line.
Electronic and electrical products
The positioning of the sheet metal parts for computer cases, monitors, and power adapters, with cross slots facilitating quick operation by production line workers, and the galvanized layer meeting the rust prevention requirements for general indoor environments.
Medical device shells
The hinge pins for rehabilitation equipment and testing instruments, with end guiding heads facilitating alignment, cold-bending parts having good dimensional consistency, ensuring the interchangeability of assembly for batch products.
Furniture hardware system
The positioning of the layer boards for panel furniture and the installation pins for drawer slides, with low cost and high production capacity meeting the fast-paced demands of the furniture industry.
Toy and stationery manufacturing
The rivet pins for models and stationery, with the head being heat-melted or ultrasonically pressed in to form a permanent fixation, and the steps ensuring consistent fitting depth.