Exam 28: Mechanical Assembly

The difference between industrial stitching and stapling is that the U-shaped fasteners are formed during the stitching process while in stapling the fasteners are preformed:

One of the advantages of rivets as an assembly method is that no special alteration of the parts to be assembled is required:

Screws and bolts can be specified in either metric standards or U.S.standards.The metric standard specification consists of the nominal major diameter followed by which one of the following:

A self-tapping screw derives its name from the fact that it does not require a pre-existing hole in the workpart:

Which one of the following types of screws is made of higher strength materials:

Most externally threaded fasteners are produced by which one of the following processes:

Which of the following methods and tools are used for applying the required torque to achieve a desired preload of a threaded fastener (three best answers):

Advantages of snap fit assembly include which of the following (three best answers):

The difference between a shrink fit and an expansion fit is that in a shrink fit the internal part is cooled to a sufficiently low temperature to reduce its size for assembly, whereas in an expansion fit, the external part is heated sufficiently to increase its size for assembly:

The technical distinction between a screw and a bolt is that a bolt is designed to be assembled into a blind threaded hole:

From the standpoint of assembly cost, it is more desirable to use many small threaded fasteners rather than few large ones in order to distribute the stresses more uniformly:

The strength of a threaded fastener is generally specified by which of the following measures (two best answers):

Which of the following are the common ways in which threaded fasteners fail during tightening (two best answers):

Which of the following are considered good product design rules for automated assembly (two best answers):

Which of the following are reasons why mechanical assembly is often preferred over other forming processes (two best answers):

Rivets are used primarily for butt joints: