Page 10 - Threading_Handbook
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1.2 Thread Classifications
INTRODUCTION Threads can be classified by the following criteria: Internal Thread
Gender
Depending on the location of the surface, the thread may be external (cut on a rod)
or internal (cut into a hole).
External Thread
Designation
The threads are divided into fasteners or connection parts, running or kinematic (in a
movable connection) by main application. Often the fastening threads carry a second
function - sealing the threaded connection, ensuring its tightness.
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