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About Industrial Fasteners
Industrial fasteners are connective mechanisms used
to join and secure materials together. Fasteners can be broken down into
two types: threaded fasteners and non-threaded fasteners. Industrial
fasteners are available in different forms such as metal fasteners, plastic
fasteners, metric fasteners or composite industrial fasteners. Some industrial
fasteners, such as locking thread industrial fasteners, have multiple
components. Self-locking industrial fasteners accessories include cotter
pins, lock wires and clips and require extra labor time for installation.
Other fasters, like frictional locking industrial fasteners, require
increased torque to install the industrial fasteners. These industrial
fasteners are not reusable and require greater loads than typically necessary
to be effective when applied to some joints.
Threaded industrial fasteners, such as nuts, bolts and screws contain
spiral ridges called threads, which aid in the attachment of the threaded
industrial fasteners. Continuous-thread studs are used for flange bolting
with two nuts applied and are threaded from end to end. Tap-end studs
have a short thread on one end for screwing into a tapped hole and a
longer threaded end called a nut-end, which may have either a chamfered
or round point. Double-end studs have equal-length threads on both ends
with chamfered points and are used for flange bolting or other applications
in which torching from both ends is necessary. Other threaded industrial
fasteners include sheet metal industrial fasteners, riveting industrial
fasteners, and clinching industrial fasteners types.
Non-threaded fasteners, such as rivet industrial fasteners, ring industrial
fasteners and pin industrial fasteners, do not contain threads. These
fasteners can be quickly assembled and removed from components and do
not need extra industrial fastening hardware. Bind fastener rivets, or
pop industrial fastener rivets, are inserted into a pre-drilled hole
and a rivet gun pulls on a headed-shaft that passes through the rivet.
The shaft breaks or “pops,” leaving a bulge on the head of
the rivet, which holds the two parts together. Dowel pins can be straight,
tapered, rolled or grooved and provide perfect alignment, holding parts
in absolute relation to one another. Most retaining rings need a groove
to seal them into position and are stamped both internally and externally.
While some of them may be self-locking, both kinds are used to keep parts
from slipping or sliding apart.
There are more than 500,000 types of fasteners and metric fasteners available.
Applications are limitless; almost every item contains a fastening mechanism
to connect parts together. There are furniture industrial fasteners,
electronic equipment industrial fasteners, appliance industrial fasteners,
aerospace fasteners, automobile industrial fasteners and building structure
industrial fasteners just to mention a few. The selection of industrial
fasteners depends upon the type of the industrial fasteners, size of
the industrial fasteners, shape of the industrial fasteners and weight
of the materials being connected. There is a wide variety of head options
for industrial fasteners, which determine how the industrial fasteners
will sit against the material. The type of head also affects the required
length of the industrial fasteners. Environmental conditions, such as
temperature, moisture and ultraviolet radiation, to which the industrial
fasteners may be subjected, are also factors. Chemicals or other corrosive
substances to which the industrial fasteners may be exposed and decorative
properties required of the industrial fasteners must also be considered.
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Types of Industrial Fasteners
- are screws and bolts used in the assembly of aircraft.
- are fasteners that are installed by pulling
the end of the mandrel or stem, resulting in the breakage of the stem
at the breaker groove and leaving the head of the stem within the fastener
body.
- have received heat treatments resulting in
a fastener surface that is harder than the core.
- follow the metric system instead of the English
system. Conversion charts are available from most fastener manufacturers.
- comply with U.S. federal and military specifications
for fastening mechanisms.
- work together to form a common fastening mechanism.
A bolt is an external threaded fastener that consists of a partially
threaded shaft, which penetrates the object connected, and is held
in place by nuts, metal blocks with complementary internal threads
that grasp the upper shaft of the bolt and secure the work piece together.
- function as latching mechanisms on doors and compartments
and join panels on cabinets, workstations and appliances.
- provide an alternative to
traditional metal fasteners, although they have low resistance to
UV radiation. Plastic fasteners
are common components of children’s toys, as well as appliances
and automobiles.
- are non-threaded fasteners commonly used on door
hinges and pulleys, as well as furniture and electronic equipment.
Pins are
placed into aligned holes in the joined parts, forming a secure connection.
- are external threaded fasteners consisting of a spiral-shaped
shaft and a head. The shaft fits into a work piece and is held
in place by the head.
- are available through many fastener manufacturers.
Specialty fasteners can be custom-made according to specific
customer requirements.
- are strong, corrosion and heat resistant
mechanisms that are useful in countless applications in the
automotive, electronic, medical, marine and construction industries.
- have received heat
treatments, resulting in consistent hardness throughout the entire
fastener.
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