MAE 1351 Exam 2 Questions & Answers 2024/2025
Screw threads - ANSWERSHelix or conical spiral formed on the external surface of a shaft or on the internal surface of a cylindrical hole.
Form - ANSWERSThe shape of some common threads
External threads - ANSWERSlocated on the outside of the ...
Screw threads - ANSWERSHelix or conical spiral formed on the external surface of a shaft or on the
internal surface of a cylindrical hole.
Form - ANSWERSThe shape of some common threads
External threads - ANSWERSlocated on the outside of the part
Axis - ANSWERSa longitudinal center line of thread
Root - ANSWERSthe bottom of the cut on external threads
Crest - ANSWERSthe top of external threads
Major diameter - ANSWERSthe largest diameter of a screw thread
Minor diameter - ANSWERSthe smallest diameter of screw thread
Pitch diameter - ANSWERSan 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 - ANSWERSThe 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 - ANSWERSthe distance between the crest and the root of a thread as measured
perpendicular to the axis
, Angle of thread - ANSWERSthe included angle between the sides of the thread
Body - ANSWERSthat portion of a screw shaft that is left unthreaded
chamfer - ANSWERSan angular relief at the last thread to help the thread engage more easily with a
mating part.
classes of threads - ANSWERSa designation of the amount of tolerance and allowance specified for a
thread
fit - ANSWERSidentifies a range of thread tightness or looseness
thread series - ANSWERSgroups of common major diameter and pitch characteristics determined by the
number of threads per inch
lead - ANSWERSthe distance a screw thread advances in one full turn
Single thread - ANSWERScomposed of one continuous ridge, the lead of a single thread is equal to the
pitch
Multiple threads - ANSWERSmade up of two or more continuous ridges following side by side
Tap - ANSWERSCuts internal threads
Die - ANSWERSCuts external threads
Through hole - ANSWERSGoes completely through an object.
Blind hole - ANSWERSdoes not go completely through an object
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