Screws with excellent chemical resistance and screws with head coating only are available
We offer screws made from various materials with excellent chemical resistance.
Metal's chemical resistance
Resin's chemical resistance
PTFE（Polytetrafluoroethylene）cover cap protects the screw head from chemicals.
The bolt head only has PTFE Coating with excellent chemical resistance.
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Chemical Resistance of Chemical-proof Screws
This page describes "Chemical Resistance of Chemical-proof Screws" such as ceramic, titanium, resin nickel and Inconel.
We can make a screw like this one
The machine parts manufacturer Nabeya Bi-tech Kaisha (NBK) at e-nedzi.com manufactures special screws to the customer's specifications, such as tip machining and surface treatment. Special material screws, resin screws and loosening prevention are also available.