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PVVM Quick Gender

GENDER
Every matched pair of threads, external and internal, can bedescribed as male and female. For example, a screw has male thread, while the matching hole has female thread.

 

 

HANDEDNESS
The helix of a thread can twist in two possible directions. Most
threads are oriented so that the threaded item when seen
from a point of view on the axis through the center of the helix,
moves away from the viewer when it is turned in a clockwise
direction, and moves towards the viewer when it is turned
counter clockwise. By common convention, right-handedness
is the default handedness for screw threads. Therefore, most
threaded parts and

 

DESIGN
The type of thread can be identified by the followingcharacteristics. fasteners have right-handed threads.

 

PITCH I TPI
The pitch is the distance from the crest of one thread tothenext in

 

DIAMETER
The major diameter is determined by the thread tips.The minor diameter is determined by the groove of the thread. The pitchdiameter is the distance of two opposite flanks or the distance of the centreline of the profile.

 

ANGLE
The flank angle is the angle between the flank of a screw
thread and the perpendicular to the axis of the screw. Tapered
threads have a taper angle. This is the angle between the
taper and the centre axis of the pipe

CREST I ROOT
The outer-most part of the thread is called crest, the inner-most
part of the thread is called root.

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