Nippon Leakless Industry Co., Ltd.

Yoshimi Arakawa

Yuji Takahashi

Yoshitaka Matsushita

Provided is a metal gasket for a cylinder head that is capable of improving engaging force between a substrate and a step adjustment plate. A method for manufacturing the metal gasket for a cylinder head includes the steps of: forming a prepared holein each of a plurality of protruding piecesof the step adjustment plate; forming a tubular portionincluding a plurality of projecting segmentsby inserting a dieincluding a polygonal pyramidal punchinto the prepared holeso as to bend up a peripheral portion around the prepared holewhile cutting the peripheral portion into segments; forming in the substratean fastening holein correspondence with a position of the tubular portionformed in the step adjustment plate; and engaging the protruding piecethrough the substrateby inserting the tubular portionof the step adjustment platethrough the corresponding fastening holeformed in the substrate, and subsequently folding the plurality of projecting segmentsof the tubular portionover to an outside of the substrateand flattening out the projecting segments.

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Saitama, Japan

Yoshimi Arakawa