MAE 1351 Exam 2 ACTUAL Exam
Questions and CORRECT Answers
Screw threads - CORRECT ANSWER✔✔- Helix or conical spiral formed on the external
surface of a shaft or on the internal surface of a cylindrical hole.
Form - CORRECT ANSWER✔✔- The shape of some common threads
External threads - CORRECT ANSWER✔✔- located on the outside of the part
Axis - CORRECT ANSWER✔✔- a longitudinal center line of thread
Root - CORRECT ANSWER✔✔- the bottom of the cut on external threads
Crest - CORRECT ANSWER✔✔- the top of external threads
Major diameter - CORRECT ANSWER✔✔- the largest diameter of a screw thread
Minor diameter - CORRECT ANSWER✔✔- the smallest diameter of screw thread
Pitch diameter - CORRECT ANSWER✔✔- an imaginary diameter measured from a point
halfway between the major and minor diameters through the axis to a corresponding point on
the opposite side
Pitch - CORRECT ANSWER✔✔- The distance from a point on a screw thread to a
corresponding poing on the next thread as measured perpendicular to the axis.
Depth of thread - CORRECT ANSWER✔✔- the distance between the crest and the root of a
thread as measured perpendicular to the axis
, Angle of thread - CORRECT ANSWER✔✔- the included angle between the sides of the
thread
Body - CORRECT ANSWER✔✔- that portion of a screw shaft that is left unthreaded
chamfer - CORRECT ANSWER✔✔- an angular relief at the last thread to help the thread
engage more easily with a mating part.
classes of threads - CORRECT ANSWER✔✔- a designation of the amount of tolerance and
allowance specified for a thread
fit - CORRECT ANSWER✔✔- identifies a range of thread tightness or looseness
thread series - CORRECT ANSWER✔✔- groups of common major diameter and pitch
characteristics determined by the number of threads per inch
lead - CORRECT ANSWER✔✔- the distance a screw thread advances in one full turn
Single thread - CORRECT ANSWER✔✔- composed of one continuous ridge, the lead of a
single thread is equal to the pitch
Multiple threads - CORRECT ANSWER✔✔- made up of two or more continuous ridges
following side by side
Tap - CORRECT ANSWER✔✔- Cuts internal threads
Die - CORRECT ANSWER✔✔- Cuts external threads
Through hole - CORRECT ANSWER✔✔- Goes completely through an object.
Blind hole - CORRECT ANSWER✔✔- does not go completely through an object
Questions and CORRECT Answers
Screw threads - CORRECT ANSWER✔✔- Helix or conical spiral formed on the external
surface of a shaft or on the internal surface of a cylindrical hole.
Form - CORRECT ANSWER✔✔- The shape of some common threads
External threads - CORRECT ANSWER✔✔- located on the outside of the part
Axis - CORRECT ANSWER✔✔- a longitudinal center line of thread
Root - CORRECT ANSWER✔✔- the bottom of the cut on external threads
Crest - CORRECT ANSWER✔✔- the top of external threads
Major diameter - CORRECT ANSWER✔✔- the largest diameter of a screw thread
Minor diameter - CORRECT ANSWER✔✔- the smallest diameter of screw thread
Pitch diameter - CORRECT ANSWER✔✔- an imaginary diameter measured from a point
halfway between the major and minor diameters through the axis to a corresponding point on
the opposite side
Pitch - CORRECT ANSWER✔✔- The distance from a point on a screw thread to a
corresponding poing on the next thread as measured perpendicular to the axis.
Depth of thread - CORRECT ANSWER✔✔- the distance between the crest and the root of a
thread as measured perpendicular to the axis
, Angle of thread - CORRECT ANSWER✔✔- the included angle between the sides of the
thread
Body - CORRECT ANSWER✔✔- that portion of a screw shaft that is left unthreaded
chamfer - CORRECT ANSWER✔✔- an angular relief at the last thread to help the thread
engage more easily with a mating part.
classes of threads - CORRECT ANSWER✔✔- a designation of the amount of tolerance and
allowance specified for a thread
fit - CORRECT ANSWER✔✔- identifies a range of thread tightness or looseness
thread series - CORRECT ANSWER✔✔- groups of common major diameter and pitch
characteristics determined by the number of threads per inch
lead - CORRECT ANSWER✔✔- the distance a screw thread advances in one full turn
Single thread - CORRECT ANSWER✔✔- composed of one continuous ridge, the lead of a
single thread is equal to the pitch
Multiple threads - CORRECT ANSWER✔✔- made up of two or more continuous ridges
following side by side
Tap - CORRECT ANSWER✔✔- Cuts internal threads
Die - CORRECT ANSWER✔✔- Cuts external threads
Through hole - CORRECT ANSWER✔✔- Goes completely through an object.
Blind hole - CORRECT ANSWER✔✔- does not go completely through an object
