GB/T 6791-1986
AbolishedSpark plug M18×1.5 with conical seating and cylinder head housing
M18×1.5 锥座火花塞及其气缸盖安装孔
Application Summary AI generated
This standard specifies the dimensions, tolerances, and technical requirements for spark plugs with an M18×1.5 thread and conical seating, along with the corresponding cylinder head installation holes. It is applied in the manufacturing and quality inspection of large-displacement internal combustion engines, such as those used in heavy-duty trucks, agricultural machinery, and industrial generators. The standard ensures interchangeability and proper sealing between the spark plug and the engine cylinder head in these specific applications.
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Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.