MAE 1351 Exam 2; Questions and Answers 100% Correct

MAE 1351 Exam 2 ; Questions and Answers 100% Correct 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 MAE 1351 Exam 2 ; Questions and Answers 100% Correct 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