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20 questions
Define a "nut"
A type of fastener with a threaded hole
A type of component that is only used underwater
A type of matrix add to fibre
Un equal balanced spring fitting
English units for bolts are which?
MM and KM
pitch and length
inches and thread count
Thread length and width
Which units will metric use for bolt sizes?
thread count and colour
MM and thread pitch
length and width
KM and MM
In most cases the nut material will be the same as the bolt?
True
False
Should the nut material be a harder metal alloy than the bolt?
Yes
No
Define a washer:
A thin plate disc with a hole in the middle
something that cleans metal
a way to edit pith and thread settings
A tool
What is the purpose of a washer?
to keep nuts and bolts separate
to eliminate the need for torque settings
generally to distribute the load of a fastener
to make it look better
Why would we use a flat washer?
to add more weight to the product
to make it look stronger
to distribute the tensile load and prevent damage
because it is a good way to add colour
Why is a spring/split washer used?
used to prevent loosening caused by vibration
used to eliminate the need for a nut
used to add character to the product
used to make it look high tech
Why are locking washers used?
used instead of a nut
used to prevent loosening by torsion/twist forces
used because they are lighter
used to prevent rust
Why are locking washers serrated?
so they do not bite into the surface
so that they do bite into the surface to prevent loosening
so that they are easy to undo by them selves
to add rust protection
What type of washer is this?
flat
open
Belleville
upside-down
What type of washer is this?
open
flat
dome
pin
What type of washer is this?
flat
open
spring
dome
Fender/repair or mud guard washer are the names used for which type?
spreading loads over a larger surface area,
reducing the surface areas,
to make the fastening look better,
to reduce the time of fitting the fasteners together,
Typically the same material for the nut bolt and washer should be used?
true
false
Some fasteners have washer and locking mechanisms built into them an example is:
Nyloc-Nylon locking nut
flat washer nuts
non-Nyloc nuts
high pitch nut
What is this type of nut called?
Button nut
Washer nut
Nylon locking nut-Nyloc
standard nut
What is this type of nut called?
standard nut
flat washer nyloc nut
lock washer
Which are to be considered when planning or designing in boatbuilding?
shape pitch and colour
hardness size and weight
size colour and weight
Performance durability and cost
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