Hands-On AutoCAD LT ©2005

Chapter 12: Threads, Fasteners, and Tolerancing

Thread Classification and Representation

1.
The specification of the degree of precision to which threads are made is
A)tolerance.
B)class of fit.
C)allowance.
D)tightness.
2.
An external thread is specified on a drawing with the letter
A)A.
B)B.
C)C.
D)D.
3.
An internal thread is specified on a drawing with the letter
A)A.
B)B.
C)C.
D)D.
4.
Threads are usually specified on a drawing by giving their pitch, thread series, class of fit, and
A)major diameter.
B)thread depth.
C)pitch diameter.
D)nominal diameter.
5.
Three types of thread representation used on drawings are simplified, detailed, and
A)standard.
B)U.S. customary.
C)schematic.
D)metric.
6.
The specified length of a hex-head bolt is given
A)from the end of the thread to the underside of the head.
B)from the overall length, including the head.
C)by the length of the threaded portion.
D)from the underside of the head to the chamfer.
7.
Screw thread representations are controlled by
A)SAE.
B)ASEE.
C)ANSI.
D)ASTM.
8.
The chamfer on the end of the thread is drawn at
A)30°.
B)45°.
C)60°.
D)75°.
9.
In simplified thread representation, the root of the thread is represented by
A)phantom lines.
B)object lines.
C)hidden lines.
D)construction lines.
10.
In detailed representation, the shape of the thread is drawn at
A)15°.
B)30°.
C)45°.
D)60°.
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