The distance between the crest & the root of a thread measured no

SOLUTION

Explanation:

• A screw thread is a continuous helical groove of specified cross-section produced on the external or internal surface.
• A screw thread formed on a cylinder is known as a straight or parallel screw thread, while screw thread formed on a cone or frustum is known as the tapered screw thread.

• Crest: The crest of the thread is the topmost surface joining the two sides.
• Root: The root of the thread is the bottom of the groove between the two flanks.
• Depth of thread: The vertical distance between a crest and a root or we can define as the distance between the crest & the root of a thread measured normal to the axis.
• Pitch: Pitch of a thread is the distance measured parallel to the axis from a point on a thread to the corresponding points on adjacent thread forms in the same axial plane and on the same side of the axis.
• Major diameter: It is an imaginary largest diameter of the thread which would touch the crests of an internal or external thread. It is also called a crest diameter.
• Minor diameter: It is an imaginary smallest diameter of the thread which would touch the roots of an external thread.
• Pitch diameter: It is a theoretical diameter between the major and minor diameter of screw threads.