What do LEGO bricks and screws have in common? They both rely on "teeth" to hold.

Sounds strange? But think about it. What keeps two LEGO bricks tightly together? It's the friction and grip between the studs on one brick and the tubes on the other.

A screw works the same way. Its threads—those spiral-shaped "teeth"—cut into the material, and the flanks press firmly against the wall of the pilot hole. The holding power comes from surface friction, pure and simple.

Same principle: a protrusion, a matching recess. Rotate to engage. Lock tight.

Why use LEGO as an example? Because LEGO demands two things: smooth assembly and rock-solid stability. Insert without jamming. Hold without loosening. Even after hundreds of connections.

A quality screw is no different. Drives in smoothly, stays put under vibration. That takes precision. If the thread angle is off by half a degree, or the surface finish is too rough, it'll bind going in—or feel loose even when "tight."

At our factory, we obsess over those details like LEGO masters:

◎ Wire diameter tolerance held to ±0.02mm before thread rolling.

◎ Thread tips chamfered for smooth entry, protecting the workpiece.

◎ Driving torque checked on every batch before shipment.

LEGO bricks can take a load many times their own weight—thanks to perfect fit. Our screws handle stress and vibration the same way: every single thread does its job.

Next time you snap two LEGOs together, remember—your screws work the exact same way. We make screws with the same precision as LEGO.