Features

• The contact area is large and excellent in waterproofing, oilproofing and dustproofing performance because the sealing packing of the contact flat type is incorporated into the annular groove of the seat surface.
• As a waterproof and dustproof screw for electronic devices such as smartphones and personal computers.
• As a waterproof and oil-proof screw for automobile parts, printing machines, medical equipment, machine tools, torque meters, etc.