Threaded rods from igus® in three variants

What exactly is a threaded rod?

A threaded rod is a cylindrical round rod with a male thread. It is used for fastening objects or in the form of a movement thread as a simple drive system. In Europe, threaded rods usually have a metric ISO standard thread, for example according to DIN 13-1. However, there are a number of other threaded rods according to other standards, such as the UNC thread according to the American ANSI/ASME standard. Last but not least, a trapezoidal lead screw according to DIN 103 is also a threaded rod.

The type of thread is defined by the profile shape, pitch, the number of thread pitches and the direction of rotation. Further terms relating to the thread can be found in our blog post. The threaded rod can be shortened or machined very easily, making it a popular and versatile product. Their range of applications ranges from model and furniture construction to mechanical engineering and the fastening of heavy loads such as for e. g., shelving systems, railings, steel structures or stairs. In building construction, a large part of the building technology is suspended with the help of threaded rods. Threaded rods are generally firmly anchored, e. g., in concrete, in order to subsequently attach an object. 

In addition to the threaded rods used for fastening purposes, there are lead screws for e. g., trapezoidal or high helix lead screws, which are used as motion threads. In common parlance, these lead screws are often also referred to as threaded rods. Lead screws actually convert a rotational movement into a translational movement (motion thread). Compared to threaded rods, for e. g., the metric threaded rod, lead screws are significantly more efficient and suitable for long-term dynamic loads. Lead screws are usually driven by hand wheels or motors. 

Do you need an individually configured threaded rod? We have the solution.

Threaded rod with high helix thread

The high helix lead screws are part of our dryspin range, which is specially designed for fast and very efficient applications. Here, thread sizes from DS4x2.4 to DS18x100 are available. The standard material of the dryspin lead screws is stainless steel AISI 304. Thereby it is 100% corrosion-free and low wear. The lead screws are also available in aluminium. The lead screws offered by igus are generally rolled. The advantages of this manufacturing process (good surface quality and cost-effective production) are ideally suited to the lubrication-free lead screw nuts made of tribologically optimised plastics. The high helix lead screws are available in right-hand, left-hand and reverse threads.

► Longer service life due to thread asymmetry
► Higher efficiency compared to conventional trapezoidal threads
► Not self-locking

Threaded rod with trapezoidal thread

The trapezoidal thread cross section is an isosceles trapezoid with an angle of 15°. The thread angle is 30°. The trapezoidal lead screw has a larger diameter and greater pitch than standard threads do. The pitch angle is smaller than the arctangent for single-start trapezoidal lead screws. Thus, self-locking is given. Two-start lead screws, on the other hand, are not self-locking.

Our trapezoidal threaded rods are available in aluminium EN AW 6082, CF-15 steel (AISI 1015) and stainless steel. As standard, the dryspin trapezoidal lead screws are produced rolled and are offered by us in the thread directions right, left and reverse.

Metric threaded rod

The metric ISO thread, also known as standard thread, normal thread or pointed thread, has become established in Europe. In this thread shape, the outer edges converge in a wedge shape. The metric ISO thread is self-locking due to this profile shape. The flank angle between two thread pitches is 60°. The diameter, like the thread pitch, is given in millimetres and is marked with an M (e. g., M8). The thread, which is defined in DIN 13, is used for non-positive connections. The metric threaded rods are available from us in right-hand threads and stainless steel 1.3041. 

► Available in thread sizes M3 to M6
► Available from standard thread to fine thread
► Fine threads are not standard with us, but of course available upon request