| 摘要 |
PURPOSE: An oil pan drain plug is provided to easily separate a nut cap stopping a nut formed on the oil pan and to prevent oil from pouring out when the nut cap is separated from the nut. CONSTITUTION: An oil pan drain plug includes a nut(6), a valve(12) and a nut cap(11). The nut has a jaw(2) projecting on an upper surface, a discharge hole(4) for discharging oil and an outer spiral part(5) formed on an outer wall of a lower portion of the jaw. The valve has a head on which a packing(8) is attached for opening and shutting the discharge hole, a rod(9) integrally formed on the head, and a jaw(10) formed on an end of the rod. The nut cap has an inner spiral part(14) screwed with the spiral part of the nut, a connection hole(17) coupled with the jaw of the valve and a discharge(16) for discharging oil.
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