Question

 The surface between crest and root is known as *



Angle of thread

Depth of thread

Pitch

flank​

Answer 1

The surface between the crest and the root is called the flank of the thread. Depth is the distance between the crest and root, measured at right angles to the axis. It is equal to the half of the difference between the outside and core diameter denoted by D.

Answer 2

Flank is the correct answer.

I hope it will help you.

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