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Construction material metal hardware
1. Metal Hardware
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Hardware
Metal products used in construction, such as:
bolts, nails, screws (rough hardware);
fittings, such as latches, hinges, locks, etc.
(finish hardware); tools.
Rough hardware : In building construction, hardware meant to
be concealed, such as bolts, nails, screws, spikes, and other
metal fittings
Finish hardware : Hardware, such as hinges, locks, tower bolt,
latches, etc., that has a finished appearance as well as a
function, esp. that used with doors, windows, and cabinets; may
be considered part of the decorative treatment of a room or
building.
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Hinges
A movable joint used to attach, support, and turn a door (or
cover) about a pivot; consists of two plates joined together by a
pin which support the door and connect it to its frame, enabling
it to swing open or closed.
Types of hinges :
Double action hinge,
butterfly hinge,
butt hinge,
dovetail hinge,
gravity hinge,
H-hinge,
HL-hinge,
pintle hinge,
side hinge,
strap hinge.
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Hinges
Concealed hinge
Used for furniture doors
(with or without self-
closing feature, and with
or without damping
systems). They are
made of two parts: One
part is the hinge cup and
the arm, the other part is
the mounting plate.
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Hinges
Steel is a favorite for hinges of all types. It is relatively cheap,
strong, and durable. Its evolution from outcast to ordinary,
There are many steel alloys, but one in particular bears notice
when it comes to hinges: stainless steel. This steel is
composed of at least 10.5 chromium, which reacts with oxygen
in the air to form a very thin film of chromium oxide on the
surface of the steel.
The discovery of this corrosion-proof metal is generally credited
to Harry Brearley,
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Hinges
Both brass and bronze are alloys of copper, which is one of the
very first alloy humans were able to master.
Brass, a mix of copper and zinc, was known to early
civilizations, but did not enjoy the popularity of its bronze cousin
largely because it was more difficult to produce. The Romans
used it to a limited extent in coins and jewelry, but brass was not
widely used until about the seventeenth century, when
European woolmakers used brass pins in weaving. Brass has
become even more popular since technology to reliably mass-
produce it was introduced in the nineteenth century
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Latch
A simple fastening device having a latch bolt, but not
a dead bolt; contains no provisions for locking with a key;
usually openable from both sides.
Spring latch
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Thumb Latch
Thumb latches are two-way latches and work as follows: on the
outside (street-side) of the gate is a decorative plate with a thumb
depressor. When you depress the thumb, a latch-arm on the
inside of the gate lifts and allows the gate to be opened. Closing
the gate, the latch-arm should hit the strike, rise up and fall into
the catch on its own (a gravity latch).
Thumb latches can be
installed only on in-swinging
gates and are always double-
sided. Some thumb latches are
lockable, some are not.
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Thumb Latch
A lift latch for securing a door in a closed position,
usually by means of a flat bar that falls into a catch when
pressed by the thumb; for example, see Norfolk
latch and Suffolk latch.
Norfolk latch A type of thumb
latch for a door that has a long
metal plate behind the latch to
protect the door finish; compare
with Suffolk latch.
Suffolk latch. A type of thumb
latch for doors; originally fabricated of
iron wrought by hand in England.
Attractive in appearance and available
in many different designs;
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Finishes
Brass versus brass plated. Many hardware items are made of pure brass.
Brass is a fairly soft metal, but it is weatherproof. It may be used inside or
outside the house. It has to be used with care around salt water, however,
because this can make it corrode. Brass plated is simply steel that has been
coated with brass. It is not weather proof.
Bronze. This is also available in pure form, and as such is weatherproof. Items
made of it can be used inside or outside the house. It does not corrode; indeed,
it is often used in marine applications. Bronze is also a very strong metal.
Bronze Plated. Like brass plated, this is steel that is coated with bronze.
Unlike pure bronze, however, it will not stand up to weather.
Bronze Plated
Brass plated
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