| 摘要 |
PURPOSE: A bolt and a nut for sealing are provided to achieve a sealing state when coupling various coupling members using the bolt and nut by forming a taper section between a bolt head and a screw shaft and forming a protruded sealing section in the nut. CONSTITUTION: A bolt includes a bolt head(10) and a screw shaft(30). A taper section(20) is formed between the bolt head(10) and the screw shaft(30). At this time, the taper section(20) is slantingly formed while forming a predetermined angle. A nut is formed at an inner portion thereof with a screw section. A protruded sealing section(110) is protruded from the screw section so that a gap formed between the bolt head(10) and the coupling member is completely removed. The taper section(20) makes contact with the protruded sealing section(110) so that coupling force is improved.
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