Q.1.

This is the bottom surface joining the sides of two adjacent threads:

Q.2.

The distance a screw thread advances axially in one turn is the:

Q.3.

The standard number of threads per inch for various diameters is the:

Q.4.

This type of fit is high quality and is used for the bulk of interchangeable screw thread work:

Q.5.

This type of thread is a thread on the inside of a member: