The root diameter of a double square thread is 0.55 in. The screw has a pitch of 0.2 in. Find the outside diameter, the number of threads per inch, and the lead.

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A: The explanation of the above terms have been explained below.

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Metrology of Screw Threads

Screw threads are a series of ridges having the profile of a helix. This helix profile runs continuously along the length of a uniform solid or a hollow bar of a circular cross-section at periodic intervals. These helix ridges are also formed over a conical bar. These continuous helical ridges are termed threads.