Date Published:May. 10. 2020
Screws must be protected from chemicals 【Energy-saving / reduced work-hours】
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（Teflon）cover cap protects the screw head from chemicals.
The bolt head only has Teflon coating with excellent chemical resistance.
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Screws with high strength are required even in environments where steel cannot be used 【Compact / lightweight】
Introducing screws using stainless steel/titanium screws with strength equivalent to steel for space and weight saving.
Ball Rollers : Characteristics
NBK's ball roller smoothly transports heavy items. An extensive lineup is available, including the upward type, plunger type, downward type and the like. Also, ball rollers with special specifications such as dimensions, shapes, materials, surface treatments, and clean room washing are available.
Galling and Seizing
This is a phenomenon that occurs while tightening, where the surface of the screw thread melts or welds due to frictional heat and the screw stops moving. To resolve galling, NBK's special surface treatment screws, such as those with fluorine coating, are recommended.