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As the market leader in thread technology, Spitzschuh has been manufacturing trapezoidal threaded nuts for conveyor technology, for mechanical engineering and for all applications in modern drive technology since 1977. The mating parts for trapezoidal lead screws are precision manufactured at Spitzschuh’s Upper Austrian plant.
Contact nowQuality is Spitzschuh’s top priority. We are able to manufacture custom trapezoidal threaded nuts to drawing. Standard nuts in common dimensions are always in stock.
Precision threaded nuts of the highest quality: Spitzschuh enables you to use the highest quality trapezoidal threaded nuts in the materials and profile size you need.
Bronze alloy nuts are self-lubricating, making them low-noise and maintenance-free. Our threaded nuts are also available in other non-ferrous metals, steel alloys and polymers.
A trapezoidal thread nut is a machine element that, together with a trapezoidal screw spindle, produces precise linear movement. Thanks to the trapezoidal thread profile, it offers high load capacity, smooth running and efficiency — ideal for applications in mechanical engineering, linear drives or lifting systems.
Trapezoidal screw nuts are characterized by their high power transfer, self-locking and long life. Compared to metric or ball screws, they are more robust, cost-effective and require little maintenance — particularly suitable for manual or slow-running drives.
Typical materials for trapezoidal screw nuts are:
Bronze: very wear-resistant and ideal for heavy loads.
Steel: robust and suitable for dynamic applications.
Plastic (e.g. POM, PA6): quiet, corrosion-resistant and maintenance-free.
The choice of material depends on the application, load and environmental conditions.
The TR 16x4 label describes a trapezoidal thread with:
- a nominal diameter of 16 mm
- a pitch of 4 mm per revolution
This standard follows DIN 103, which defines the dimensions and tolerances for trapezoidal threads.
A trapezoidal thread nut is considered self-locking when the angle of friction is greater than the pitch angle of the thread. As a result, the nut remains in position even without brakes or backflow protection — ideal for lifting devices, presses or adjusting screws.
Assembly is carried out by screwing onto the appropriate trapezoidal screw spindle.
Axial alignment to avoid tilting, clean threads and, if necessary, lubrication (e.g. with PTFE or molybdenum disulfide grease) for longer life are important. Plastic nuts are usually maintenance-free, metal nuts should be lubricated regularly.
Common designs are:
- Cylindrical nut flange nuts (with mounting flange)
- hexagon nuts
- long nuts
These variants allow flexible adjustment to various installation and load requirements.
Trapezoidal thread nuts are used in a wide range of applications, including:
- Mechanical and plant engineering
- Linear guides and positioning systems
- workbenches, vises, lifts
- 3D printers and CNC machines
They are convincing wherever precise, powerful and long-lasting linear movements are required.
The selection depends on:
load (axial and radial)
Thread type and size (according to DIN 103)
material requirements
Movement speed
Installation space and mounting method
A comparison with the manufacturer's technical data sheets is recommended.
While trapezoidal threads are based on sliding friction, ball screws use rolling friction caused by circulating balls. Ball screws are more efficient and faster, but more expensive and require more maintenance. Trapezoidal thread nuts, on the other hand, offer self-locking and high robustness — perfect for static or manual applications.
