本文件已被宣布为“稳定”，不再接受货币定期审查。用户负责验证参考资料和持续适用性或技术要求。新技术可能存在。本SAE标准详细说明了对非屏蔽火花塞的热额定值进行分类的统一方法。

This document has been declared "Stabilized" and will no longer be subjected to periodic reviews for currency. Users are responsible for verifying references and continued suitability or technical requirements. New technology may exist.This SAE Standard details a uniform method for classifying heat ratings of unshielded spark plugs.