Vertical elastic opening structure
Uniform through-longitudinal slots are set along the axis, with the slot width being approximately 10% to 15% of the circumference. This enables the circular tube to undergo radial elastic compression, and after being pressed into the hole, it will rebound and open, forming a 360-degree full circumferential contact pressure. The load distribution is uniform without stress concentration.
Multi-layer wall rolled design
The standard type is single-layer rolled, while the heavy type is double-layer or triple-layer rolled. The layers can slide relative to each other. When subjected to impact loads, energy is dissipated through inter-layer friction, and its vibration and fatigue resistance performance is superior to solid pins.
Bevel introduction end
Both ends have 15° to 30° internal and external bevels, which facilitate automatic alignment when pushed into the hole, and the compression deformation is smooth without sticking. The assembly force is only 30% to 50% of that required to press the solid pin.
Continuous elastic deformation capability
The material undergoes quenching and tempering treatment, with a high elastic limit. It can be repeatedly disassembled 5 to 10 times while still maintaining sufficient clamping force, making it suitable for occasions requiring frequent maintenance.
Standardized size series
The outer diameter and length are classified according to international standards such as ISO 8752, DIN 1481, and GB/T 879. The diameter tolerance band is m6, forming a light interference with H7 holes, and no additional processing of keyways or pin holes is required.

Assembly is simple and efficient.
No precise alignment of the pin hole direction is required. Just push it in at any angle. The assembly time is only 1/5 of that of traditional cylindrical pins. It is suitable for rapid insertion in automated production lines and significantly improves overall efficiency.
Cost is economical and low.
The rolled process has a high material utilization rate, and the production cost is low. The unit price is only 1/3 to 1/2 of the solid positioning pin. The cost reduction effect is obvious when used in large quantities.
Excellent vibration and loosening prevention
The elastic pressure continuously acts on the pin hole wall, and no fitting gap is generated under vibration conditions. It naturally has the ability to prevent loosening, and no additional anti-loosening washers or pins are required.
Strong tolerance compensation capability
The elastic deformation can absorb the manufacturing error of the hole diameter. The tolerance band of the mating hole can be relaxed to H9, reducing the processing accuracy requirements of the connected parts and reducing the scrap rate.
No damage during disassembly and reusable
Using a punch to strike from one end, it can be ejected without damaging the surface of the mating hole. The pin body can be reused multiple times, and the maintenance cost is lower than that of one-time used opening pins or conical pins.

Automobile chassis connection
Hinge positioning of steering knuckle, suspension arm, and stabilizer bar, elastic pins absorbing road impact and vibration, preventing looseness of connections, double-layer heavy-duty specification meeting load requirements.
Mechanical equipment positioning
Radial positioning of gears, pulleys, couplings and shafts, replacing key connections simplifies processing, reliable torque transmission in light-load drives, axial fixation with matching retaining rings used.
Electronic and electrical assembly
Locating pins for radiators, circuit board brackets, plastic housings, stainless steel material without magnetic interference to the circuit, elastic clamping to avoid plastic part cracking due to interference fit assembly.
Tooling and fixture quick change
Locating benchmarks and quick-change pins for welding fixtures and assembly fixtures, frequent disassembly does not affect accuracy, replacement cost is low after wear of pin bodies.
Furniture hardware connection
Hinge shaft pins for folding chairs and storage racks, installation is simple, users can repair themselves, elastic pre-tightening eliminates clearance between components to avoid shaking and abnormal noise.
Medical device disinfection
Hinge pins for surgical instruments and disinfection boxes, stainless steel material can withstand high-temperature and high-pressure steam disinfection, no risk of coating detachment and contamination.