Expansion screws
Standard Expansion Screws
Eighty years of research distilled into the classic screw: stainless steel body, rectified guided pins, built-in screw stop.
A0800A0803A0805A0890
Leone expansion screws for removable appliances derive from eighty years of research, design and millions of clinical cases. Production takes place entirely in Italy on computer-aided, automated machines. Bodies and guides are machined to tolerances of ±0.01 mm, which is what guarantees the stability and precision the appliance depends on.
The male threads are cut to centesimal tolerances with a total absence of surface roughness, so friction stays constant through the whole expansion. A built-in screw stop at the end of the stroke prevents over-activation, rectified guided pins keep the two halves in line, and the anti-slippage thread holds the activation you have set.
Technical specifications
| Material | Biomedical stainless steel |
|---|---|
| Tolerance | Bodies and guides ±0.01 mm; centesimal thread tolerance |
| Variants | Standard upper · universal · medium · super micro · micro sectional |
| Guide pins | Rectified, straight or bent U-shape |
| Safety | Built-in screw stop at stroke end, anti-slippage thread |
| References | A0800 · A0803 · A0805 · A0890 |
| Activation | 0.4 mm pitch, ¼ turn per activation |
Gallery
