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All
About Plastic Fasteners
Plastic
screws provide the simple solution to problems of insulation,
corrosion, weight saving and magnetism. Although not as strong as their
metal counterparts the unique properties of plastic fasteners make them
suitable for use throughout industry. Current applications include
electronic and electrical equipment, computers, refrigeration, medical
equipment, signs, car number plates, switches and instruments. Fastener
types shown here comprise our standard range. We welcome your enquiries
for producing to your own specifications. So if you can't see what you
need here, please let us know.
Materials
Our
standard range of fasteners is manufactured in natural Nylon 66, which
offers excellent insulation properties combined with corrosion and
chemical resistance and a certain degree of toughness. Where higher
chemical resistance is a prime consideration we do offer a limited
range of fasteners in Polypropylene.
Polypropylene
is
resistant
to
a wide range of chemicals except strong oxidizing
agents such as concentrated nitric and sulphuric acids, dry chlorine
and bromine gas.
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If you are
looking for something else in the way of performance, there are other
engineering plastics and additives available to suit specific
applications. It must be stressed that while some existing moulds may
be used with these materials, dimensions cannot be guaranteed because
of varying shrinkages with each different plastic.
Colours
Natural
Nylon 66 is milky white in colour. Other colours are obtainable either
by dyeing or moulding from pigmented raw materials. Some dyes will
bleach out if subjected to UV light over a prolonged period. Moulding
from pigmented materials overcomes this problem but their use is
subject to commercial considerations.
Locking
Nylon
screws should be power driven with a slip clutch set at a minimum
torque or hand driven until they bottom and then tighten one half turn.
Threads
All our
standard screws and nuts are to the following I.S.O. Course Thread
Pitch Recommendations.
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