Trapezoidal nut 20x4 left-hand cylindrical, steel

Product Description

Trapezoidal nut 20x4 left-hand cylindrical, steel

The nut works with a trapezoidal screw with the same thread - choosing the correct size and thread hand is key to the correct operation of the mechanism. Standard DIN 103 / ISO 2901-2904, material Steel 11SMnPb37 (1.0737), left-hand thread Tr 20x4 - parameters fully compliant with the trapezoidal screw drive standard.

Technical data

Frequently asked questions

Which trapezoidal screw fits this nut?

You need a screw Tr 20x4 with the same thread hand (left-hand) and the same pitch - other sizes will not fit together.

Does a standard trapezoidal nut have backlash in the thread?

Yes, some backlash results from the manufacturing tolerance of the thread - this is normal. If you need zero backlash (e.g. for precise positioning), anti-backlash nuts are used, which are a different product from a standard nut.

How can you tell that a trapezoidal nut is worn?

The most common sign is increasing backlash between the screw and the nut - noticeable jerking when the direction of motion changes. This means the nut thread has worn and needs to be replaced.

How do the material families of trapezoidal nuts differ?

Steel is chosen for fastening joints without sliding motion, bronze for drives with continuous sliding motion (low friction), and brass for lighter applications where moisture resistance matters at a lower cost than bronze.

What are the properties of this nut's material?

Material: Steel 11SMnPb37 (1.0737) - a strong base material, resistant to high axial forces in fastening joints.

How is this nut mounted in the mechanism?

The cylindrical body is designed to be installed inside a housing or mounting sleeve.

Where are 20x4 trapezoidal nuts used?

Typical applications of 20x4 nuts are: presses and screw jacks, machine vices, height adjustment mechanisms, sliding tables and axis drives in machine tools - wherever precise conversion of rotary into linear motion matters.

Product photos are for illustration purposes.