WorksheetsFasteners
Total questions: 25
Worksheet time: 14mins
A fastener with internal threads is known as a _________.
bolt
nut
tap
lock washer
In the bolt description 3/8-16 UNC -2A, the number 16 represents the
Thread Tolerance
Threads Per Inch
Major Diameter
Class of Fit
In the bolt description 1/4-28 UNF -2A, the fraction 1/4 represents the _______ of the bolt.
Class of fit
Diameter
Length
Pitch
What is dimension D?
Thread Pitch
Bolt Diameter
Major Diameter
Minor Diameter
U.S. customary bolts are marked with __________ to indicate bolt grade. Metric bolts are marked with ______________.
Lines; Numbers
Numbers; Lines
Lines; Symbols
Symbols; Lines
Badly smashed or stripped threads may be repaired with either a _______ or __________
Tap; Die
Plug; Tap
File; Lock-Tite
They can't be fixed
The bolt head shown is from a _____________ bolt.
U.S. Customary
UNF
metric
medium
What fastener type is shown in the picture?
Tap
Clevis
Nut
Spline
What bolt grade is shown in the illustration?
Grade 2
Grade 3
Grade 5
Grade 8
What do the letters UNF represent when referring to threads?
Unified National Fine
Unexpected National Fine
Unified National Fixed
Unified National Furnished
UNF has ______ _______ per inch than UNC.
fewer threads
no threads
more threads
less threads
Which is the correct dimension for measuring the bolt length?
D
C
B
A
A gasket is used to
ease engine starting
seal moving parts
seal gaps between parts
none of the above
The type of nut shown is a ___________ nut.
nylock
acorn
brazil
castle
This metric fastener has a thread pitch (coarseness) of (a) .
This picture shows the use of a _______ __________ to remove a broken fastener.
screw extractor
"easy-out"
Both A and B
None of the above
The threaded plug shown has a thread pitch of _________.
24 mm
24 threads per inch
24 inches
24 teeth
The sealer shown is used between two smooth, true surfaces, and cures in the absence of __________.
air
heat
light
pressure
