戻る
Thread terminology external thread and internal thread Outer diameter Inner diameter Pitch Thread angle
The part shaped like Mt. Fuji is the "screw mountain".
The thread is " external thread " on the outside and " internal thread " on the inside.
The threads are connected in a spiral pattern.
Screw terminology
A: Pitch B: Thread angle C: Inner diameter D: Effective diameter E: core diameter ( external thread ) F: core diameter ( internal thread ) G: Outer diameter H: Width of thread I: Width of thread
Effective diameter (D): The diameter of a hypothetical cylinder such that the width of the thread (H) is equal to the width of the thread (I)
Screw Thread Angle
The angle of the thread is the angle between the slopes of one thread.
Depending on the type of screw, the angle of the thread is determined. Example: Metric thread: 60°