| 摘要 |
PROBLEM TO BE SOLVED: To provide a bolt with a screw leg seal having a highly accurate value in actual mounting axial force in fastening torque management and a limiting temperature in high temperature use increased to a high temperature region. SOLUTION: The outer peripheral face of a screw leg 2 of the metal bolt 1 is covered with a seal layer 3. The seal layer 3 is formed as a metal seal layer 4. The material of the metal seal layer 4 has lower compression strength and greater ductility than that of the screw leg 2 of the bolt 1. The material of the screw leg 2 of the bolt 1 is iron metal while the material of the metal seal layer 4 is aluminum metal. COPYRIGHT: (C)2005,JPO&NCIPI
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