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Explore our highly-engineered mechanical fasteners designed to optimize load distribution and eliminate thermal distortion in structural profiles.
In modern manufacturing, the push towards lightweighting, material conservation, and structural efficiency has led to the widespread adoption of thin-walled tubes. From automotive frames and aerospace structures to solar racking systems and medical equipment, engineers are continuously replacing heavy solid components with hollow profiles. However, this design transition presents a fundamental fastening challenge: how do you add strong, reliable threads to thin-walled materials where traditional thread tapping is physically impossible?
Direct tapping into tubes with wall thicknesses under 3mm yields insufficient thread engagement, leading to rapid stripping under load. Traditional alternatives, such as welding nuts or studs to the tubing exterior, introduce intense heat that causes thermal distortion, weakens the base material, and requires expensive post-weld cleanup. This is where Blind Threaded Studs have emerged as a disruptive technology in the global industrial fastening market.
Commercially, the demand for blind threaded studs has surged alongside the growth of automated assembly lines. Offering one-sided installation, these mechanical fasteners allow manufacturers to establish load-bearing external threads on closed hollow sections in seconds. By eliminating secondary processes like deburring, tapping, and welding, factories achieve lower cycle times, reduced labor costs, and significantly higher yield rates.
Enables the use of ultra-thin steel and aluminum tubes without compromising the structural integrity of the fastening joints.
Unlike projection welding, mechanical installation preserves pre-painted, galvanized, or heat-treated surfaces without thermal degradation.
Analyzing how blind threaded studs outperform traditional methods across complex structural designs.
Blind threaded studs function through a precise mechanical deformation process. When inserted into a pre-drilled hole in a thin tube, an installation tool pulls the internal mandrel of the stud, causing the unthreaded sleeve portion to collapse outwards (upset) against the inner wall of the tube. This creates a secure, permanent clamp-up that locks the fastener in place, offering high torque-out and pull-out resistance.
| Fastening Method | Installation Speed | Thermal Impact | Suitability for Pre-coated Tubes | Structural Integrity |
|---|---|---|---|---|
| Blind Threaded Studs | Fast (<3 seconds) | None (Cold deformation) | Excellent (No surface damage) | High (Distributes load uniformly) |
| Direct Tapping | Slow | None | Poor (Stripping hazard on <3mm walls) | Extremely Low (Insufficient threads) |
| Weld Studs / Weld Nuts | Moderate | High (Causes warping) | Very Poor (Requires coating removal) | Medium (Heat affects parent metal) |
In terms of structural performance, blind threaded studs provide a dual benefit: they act as a structural rivet to reinforce the hole while simultaneously presenting a high-strength threaded stud for external component mounting. This makes them indispensable in applications such as:
Lantern rivets are often used to connect components such as plastic instrument panels, interior trim panels and automotive interior decorations. These parts are mostly made of fragile or soft materials like plastics. The three folded feet formed after the riveting of lantern rivets can distribute the clamping force, avoiding damage to the riveted materials. Meanwhile, rivets with large caps can increase the riveting area and further disperse the riveting load.
Lantern rivets are extensively applied in the assembly of automotive bumpers. They have good load - bearing capacity and stability, are suitable for connecting various metal and non - metal materials, and can meet the requirements of reinforced assembly between bumpers and vehicle body structures. In addition, lantern rivets are also used for fixing some automotive lamps, and their structure can provide reliable connection in vibrating environments.
In the automotive ventilation system, lantern rivets can be used to connect related components. The components of the ventilation system usually need to be connected with materials such as rubber and plastics, and the characteristics of lantern rivets make them well - adapted to these materials, ensuring the firmness and tightness of the connection.
Lantern rivets are also adopted for connecting the casings or brackets of electronic equipment inside the car, such as audio systems and on - board computers. They can realize the reliable connection of components like thin metal plates or plastic casings without damaging electronic components.
For some trucks or cars equipped with tarpaulins, lantern - type rivet nuts can be used to fix the tarpaulins. Their expanded structure has a large contact surface, which can fix the tarpaulins more firmly.
How industry 4.0, advanced coatings, and lightweight alloys are shaping the future of blind fastening technology.
As global manufacturing sectors progress toward smarter production, the technology surrounding blind threaded studs is evolving rapidly. Key development trends include:
High-volume manufacturing plants, particularly in the automotive and solar sectors, are increasingly transitioning to fully automated robotic cell installations. Modern installation tools can now be mounted directly onto robotic arms, featuring automatic feed systems that insert and set blind threaded studs at speeds under 2 seconds per cycle. Real-time sensor feedback tracks setting force and stroke distance to guarantee 100% quality control.
To mitigate galvanic corrosion—especially when steel fasteners are paired with aluminum structural tubing—manufacturers are developing high-grade stainless steel (SUS304/SUS316) studs and advanced zinc-nickel alloy plating. These coatings provide up to 1000 hours of salt spray resistance, making them ideal for harsh outdoor environments like offshore solar grids and coastal infrastructure.
With the rising use of high-strength low-alloy (HSLA) steel tubing in vehicle chassis design, blind studs must withstand higher tightening torques. Engineers are designing specialized internal knurling and ribbed shanks that bite into the parent metal of the tube, providing unmatched torque-to-turn ratios and preventing rotation during high-torque bolt installations.
Discover our comprehensive portfolio of high-performance blind rivets and threaded studs engineered to meet strict industrial specifications.
