Types of fasteners

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Types of fasteners

• Explaining 10 different types of fasteners and
  their uses.

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Fasteners are everywhere. From our smartphone to
Sydney harbour bride, everything around us is
held together with fasteners and fixings. From
rivets, nuts, bolts and screws to paper clip,
split clip and nail are all considered to be
fasteners.
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Interesting facts about fasteners
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• Did you know, a Boeing 747 -400 has six million
  parts, half of which are fasteners. That is 3
  million different types of nuts and bolts, rivets
  and screws.

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Worlds Biggest Bolt Nut

• Did you know, the biggest bolts ever made were
  enormous - 27' 4" long (8.3m), 4' 2" diameter
  (1.27m), weighing 12.6 tons.

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There are 18,038 iron parts and more than
2,500,000 fasteners (rivets) used to hold the
Eiffel tower together.
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1 Wood Screws
In this list, the first type of fastener is the
wood screw. These screws generally have a very
smooth shank and tapered point for use in wood.
You can find various types within the wooden
fasteners category.
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2 Machine Screws
Machine screws often referred to as stove bolt is
a machine threaded screw for use with nut or in a
tapped hole. Normally used to join sheet metal
parts using a hex or square nut.
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3 Sheet Metal Screws
Unlike the wood screws, the sheet metal screws
sharp threads not only cut into wood but other
materials such as sheet metal, plastic and more.
Most commonly used to attach metal hardware to
wood. The shank of the sheet metal screw is
usually threaded up to the head.
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4 Self Drilling Sheet Metal Screws
Type of sheet metal screws, the difference is its
ability to self-drill helping tradesman with
speed and ease of installation. These types of
fasteners provide maximum thread engagement in
structural steel and timber constructions.
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5 Hex Bolts
Abbreviated HHMB or HXBT, Hex Bolt is a type of
fastener with a hexagonal head with threads for
use with a nut or tapped hole. Feature that make
Hex bolts a choice of handyman, construction and
engineering professionals is washer surface that
helps creating a better seal.
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6 Carriage Bolts
Carriage bolts are generally/mainly used for
fixing wooden panels to masonry or to one
another. Also known as coach bolt or round head
square neck bolt. The carriage bolts features a
smooth mushroom rounded head with a small square
section underneath.
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7 Lag Bolts
Lag bolts or lag screws are a larger and tougher
version of wood screws. These bolts feature a
hexagonal head and are considered one of the
toughest fasteners. Lag bolts are generally used
to connect heavy lumber or other heavy materials
that are bearing an intense load.
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8 Flange Bolts
Flange bolts are one of the few fasteners with a
built-in washer. Specially designed to provide
same holding power as washer, this bolts flange
head distributes the clamping load over a greater
area. Flange bolts are machine thread for use
with a nut and are also known as frame bolts.
These bolts are generally used in the assembly
line by automotive industry.
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9 Socket Screws
A socket screw also known as Allen head screw is
the best solution when space is at premium. These
specialised fasteners features a cylindrical head
and hexagonal drive hole. To tighten and remove,
youd require a hexagonal wrench more commonly
known as Allen wrench. Most commonly used in
building of machines, high-performance
applications and aircraft.
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