The term thread refers to a shaped groove that spirals around a cylindrical object, inside or outside, in a helical line. The “groove” is referred to as thread. This implementation of the inclined plane principle allows the generation of large longitudinal forces based on moderate circumferential forces. As a result, screws exhibit a holding force or other forces that are required where loads are moved or pressure and traction are created (screw press, wine press, hydraulic jack).
Components with external threads (e.g. stand rods or bolts) and components with internal threads (e.g. stand plates or nuts) need to match. Standards help to ensure that, despite a separate production, the function of components of the same nominal sizes is always guaranteed.
Unit of measurement:
Thread sizes are indicated by using the letter M in the product data. The metric ISO thread is a globally standardized thread that has been improved over the previous metric thread, but is interchangeable with it in most cases. (DIN 13) (Metric System).
Examples at Bochem products: M6, M8, M10.
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