| 摘要 |
PURPOSE: Structure for mounting a gasket of a drain plug is provided to improve the oil sealing and the wear resistance of a gasket by integrally forming the gasket on the interface of a drain plug for blocking an oil drain hole of an oil pan. CONSTITUTION: A tapered annular groove is formed on the border of a head part and a bolt part of a drain plug(30). The drain plug is mounted in an oil drain hole(21) while a gasket(40) having a triangular sectional shape is fitted in the annular groove. The axial force of the drain plug is applied to the gasket in an inclined direction.
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