|
Fixing method
|
Information (Screw Thread Terminology)
|
More information
|
|
Circlip
a simple locking device coiled or formed from
wire or pressed from strip.
|
It is often a simple ring used to compensate for axial play.
Sometimes identified in their radial applications as internal (for bores) or
external (for shafts) but more often than not they spring into a groove to
lock another component in place or they take up any axial play that is likely
due to tolerancing.
|
How to measure a
standard circlip: At the widest point measure from the outside of one edge to the
inside of the opposite edge. For internal circlips we require the bore
housing. For external circlips we require the shaft diameter.
|
|
Starlock push on fasteners
|
External fixing
washers for use not only on precision-machined shafts but also on tubes, cast
parts, plastic shafts and studs.
The washers
are pushed on to the shaft causing the prongs to grip the shaft tightly,
locking the washers in place with initial tension.
|
http://www.springmasters.com )
Material:
Carbon spring steel and stainless
steel (certain sizes only)
Surface Finish:
Uncapped fasteners can be supplied in bronze and varnish or in mechanical
zinc plated finishes and certain sizes are available in stainless steel.
Caps are supplied in stainless steel.
Available
for shaft sizes 1.5mm to 25mm.
|
|
http://www.bakfin.com/http://www.bakfin.com
|
|
Hose Clamps
|
The rolled edges of the band allow for smooth
clamping of the hose upon tightening or when clamped. Hose Clamps are available in
different diameter ranges to match various pipe and hose joint connections.
http://www.springmasters.com
|
http://www.horsepowerfreaks.com
|
|
Push on Fasteners
|
Push-in Fasteners provide an inexpensive, fast,
convenient method to join plastic, light sheet metal, insulating materials,
circuit boards, or any other thin, lightweight material. They can also be
used as push-in glides or as bumpers. Special designed legs provide
compresion and expansion to lock fastener into pre-punched holes. These
fasteners are vibration, abrasion, and corrosion resistant, and feature large
heads for easier assembly, and can be used over and over. (http://www.plasticnutsandbolts.com/panelfastenersholeplugs.html)
|
nylonPush-in_fastener.
http://www.plasticnutsandbolts.com
|
|
Cotter Pins
|
Cotter pins
come in many shapes and sizes and materials. They are basically a pin that
can be spread after insertion into a hole.
Holes must first be
drilled in the rods or wood. Clip the pin onto the wire, put the 2 legs of
the pin through the hole and bend the ends back to the fence wire.
http://www.kencove.com
|
http://www.earlyclassic.com
Pre drilled assembly into which the cotter
pin is pushed in and legs bent backwards
http://www.jamestowndistributors.com
a clevis pin into which
the cotter pins is pushed through and spread causing it to lock .
|
|
Nuts bolts screws and
washers
|
|
Hex bolts, also known as hex cap screws or machine bolts.
http://www.boltdepot.com
|
A carriage bolt mostly used in
wood with a domed top and a square under the head. This pulls into the wood
as the nut is tightened. http://www.boltdepot.com
|
Socket screws, also known as Allen head are
fastened with a hex Allen wrench. Available in several head styles and
materials. http://www.boltdepot.com
|
|
Washers provide a greater bearing surface under the
fastener. This helps prevent a nut, bolt or screw from pulling through the
material. http://www.boltdepot.com)
The washer acts as a means of distributing
the stress applied to components that are bolted together. The washer also
cuts down on friction as the bolt is being turned. As a general rule of
thumb, it's best to place a washer between two fasteners where the actual
turning action is taking place when tightening. This allows a washer to do
its
job. http://store.nutsandbolts.com
|
A wood screw for use
exclusively in wood. Available in a variety of head styles and materials.
http://www.boltdepot.com
|
Sheet metal screw. Highly versatile, used in wood,
fiberglass and metal, also called self-tapping screws. Available in steel
and stainless steel. http://www.boltdepot.com
|
|
Often called a lag screw. Hex lag bolts are
for fastening in wood. Available in a variety of materials. http://www.boltdepot.com
|
Hex
lock nuts The
bolt threads into the nylon material located at the top of the nut. This
helps prevent loosening from vibration. http://www.boltdepot.com
|
A hex nut
is basically a six sided nut that comes in a variety of sizes and
materials. It is locked onto a bolt. Used to attach machine thread
fasteners. http://www.boltdepot.com
|
|
|
|
Screw measurements
There
are many systems for specifying the dimensions of screws, but in much of
the world the ISO preferred series metric has displaced the many older
systems. http://www.wikipedia.org
Metric screws
The diameter of a ISO preferred
series screw is specified in millimetres (mm) prefixed by the capital
letter M, as in "M6" for a 6 mm diameter screw.
The
pitch of metric threads varies according to the diameter, but not
absolutely regularly. Some examples: a M3 thread has a 0.5 mm pitch, M4:
0.7 mm, M6: 1 mm, M10-12: 1.5 mm, M14-16: 2 mm, M18-22: 2.5 mm.
The
diameter of a metric screw is the outer diameter of the thread. The tapped
hole (or nut) into which the screw fits, has an internal diameter which is
the size of the screw minus the pitch of the thread. Thus, an M6 screw,
which has a pitch of 1 mm, is made by threading a 6 mm shaft, and the nut
or threaded hole is made by tapping threads in a 5 mm hole.
Metric
screw threads are also available in "fine pitch" versions,
sometimes several pitches for one diameter (example: M18/fine in 1, 1.5 and
2 mm pitches). The fine thread series is deprecated and not recommended for
use in new designs. The fine metric threads were once found in equipment
made in the Far East, but that has changed with the standardisation of the
ISO preferred thread series.
|
|