Q.1

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

  • Lead
  • Pitch
  • Crest
  • Root
Q.2

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

  • Lead
  • Pitch
  • Turn
  • Crest
Q.3

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

  • Series of thread
  • Lead
  • Major diameter
  • Thread pitch
Q.4

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

  • Class 1
  • Class 2
  • Class 3
  • Class 4
Q.5

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

  • Basic thread
  • External thread
  • Internal thread
  • Major diameter thread
0 h : 0 m : 1 s