Gewindegrößen

Gewindegrößen refer to the standardized dimensions and specifications of screw threads. These parameters are crucial for ensuring compatibility and proper function between mating parts, such as screws, nuts, and tapped holes. The most common system globally is the metric thread, designated by the letter M followed by the nominal diameter in millimeters. For example, M6 indicates a metric thread with a nominal diameter of 6 millimeters.

Beyond the nominal diameter, the pitch is another essential characteristic. The pitch is the distance between adjacent thread crests, measured axially. For metric threads, there are typically two types of pitch: coarse and fine. The coarse pitch is the standard and is usually not explicitly stated, while the fine pitch is specified with a hyphen and the pitch value in millimeters after the nominal diameter, like M6x0.75. A smaller pitch generally results in a stronger thread.

Other important factors in defining a Gewindegröße include thread angle, thread form, and tolerance class. The thread angle, commonly 60 degrees for metric threads, determines the shape of the thread profile. The thread form describes the specific geometry of the crests and roots. Tolerance class dictates the allowable deviation from the nominal dimensions, ensuring interchangeability of parts. Standards organizations like ISO (International Organization for Standardization) and ANSI (American National Standards Institute) define and maintain these specifications to guarantee consistency in manufacturing and assembly worldwide. Understanding Gewindegrößen is fundamental for anyone involved in mechanical engineering, manufacturing, or repair.