Deck 16: Fasteners

Question 1

Most permanent fastening systems use fastening devices.

Answer 1

False

Question 2

Which of these is expressed in the number of threads per inch (TPI)?

A) lead
B) axis
C) pitch
D) form

Answer 2

C

Question 3

The pitch diameter lies between the major and minor diameters.

Answer 3

True

Question 4

What is the major fastening device used for permanent fastening?

A) solder
B) screw
C) nut and bolt
D) rivet

Question 5

Combinations of template openings must be used to draw all the features of a fastener symbol.

Question 6

Which of these is an example of a permanent fastener?

A) pin
B) key
C) screw
D) glue

Question 7

As viewed from the head, a left-hand thread turns clockwise into an object or threaded opening.

Question 8

Pipes have either straight or tapered threads.

Question 9

Most technical drawing pictorial templates include isometric angles.

Question 10

What term refers to the lateral distance the axis of a fastener moves during one 360° revolution of the fastener?

A) lead
B) root
C) crest
D) axis

Question 11

A _____ is a mechanical device that yields by expansion or contraction due to pressure, force, or stress applied.

A) spring
B) pin
C) rivet
D) thread

Question 12

When using metric notations for fasteners, pitch is measured in:

A) inches
B) millimeters
C) centimeters
D) micrometers

Question 13

Schematic symbols show only the alignment of major and minor diameters, and the length of the threaded portion of the fastener.

Question 14

Spring information is generally lettered in the form of a specific or general note.

Question 15

A _____ is an arched metal shape designed to cause tension on adjacent parts in machinery.

A) torsion spring
B) flat spring
C) tension crest
D) root helix

Question 16

The functioning of all threaded fasteners is based on the principle of the inclined plane.

Question 17

What are the three parts of a threaded fastener?

A) body, head, and point
B) head, root, and crest
C) pitch, axis, and thread
D) body, root, and axis

Question 18

The term _____ refers to a spring's maximum possible compression.

A) free length
B) compression length
C) solid height
D) loading extension

Question 19

ASME conventions are compatible with the ISO metric series.

Question 20

A _____ is an evenly spaced spiral curve around a cylinder.

A) pitch
B) helix
C) spring
D) crest

Question 21

Imagine that you are drawing an isometric flat head machine screw with a template. What should you do next after measuring the length of the body and head?

A) use the template to trace the body and head diameters
B) locate the center of the screw
C) draw a slot in the head
D) draw thread representation

Question 22

Imagine that you wanted a threaded external fastener with a loose fit. Which tolerance fit class should you choose?

A) 1B
B) 2A
C) 3A
D) 3B

Question 23

What common thread fastener is threaded at both ends?

A) bolt
B) machine screw
C) cap screw
D) stud

Question 24

Imagine that you are drawing a side view of a jamb nut with a template. What is the correct way to draw the bottom of the nut?

A) locate the center of the outline of the top of the nut, draw two 45° lines down to the bottom corners, then connect the points
B) reverse the template used for the top of the nut and trace it
C) draw a straight line across the bottom of the outline drawn for the top of the nut
D) draw a curved line across the bottom of the outline drawn for the top of the nut

Question 25

Imagine that you are creating a pictorial drawing of an external thread. At what angle should the lines for the V threads be drawn?

A) 30°
B) 45°
C) 60°
D) 75°

Question 26

Imagine that you are drawing a simplified external thread symbol. At what angle should you draw the chamfer?

A) 30°
B) 45°
C) 60°
D) 75°

Question 27

Imagine that you are drawing a schematic internal thread symbol and you have just drawn the outline of the tap drill hole's diameter to the required depth. What should you do next?

A) darken and add crosshatching
B) draw the outline of the thread's major diameter to the required depth
C) draw the lines for the minor diameter lines from root to root
D) estimate the pitch spacing and draw lines to the major diameter

Question 28

Which type of fastener head does NOT have a groove in the top?

A) flat
B) fillister
C) carriage
D) truss

Question 29

Imagine that you need a screw with a coarse thread. Which screw thread series should you choose?

A) UNF
B) NC
C) UNEF
D) NEF

Question 30

The outside diameter of the threaded portion of a fastener measured from crest to crest is called the _____ diameter.

A) major
B) minor
C) right-hand
D) left-hand