| 摘要 |
A stamp nut for uniting an oil cooler with a tank of a radiator is provided to reduce the whole width of the radiator tank and prevent to release because of the double configuration of undercut and protrusion formed in the clamping portion. A stamp nut(10) unites an oil cooler(50) with a plurality of through holes(42) formed on an end of a tank(41) of a radiator(40). The stamp nut has a cross section to be inserted between the oil cooler and through hole while surrounding the circumference of the through hole of the tank. On the inner circumference of the stamp nut, female thread which is inserted between the oil cooler and through hole and screwed with the oil cooler is formed. The stamp nut has a clamping portion(20) contacting the outer circumference of the through hole of the tank, and a joint portion(30) which is connected to the end tip of the clamping portion and inserted between the oil cooler and through hole. |
