国标螺纹标准对照表

螺纹规格牙距螺纹底孔直径M2标准0.41.6细牙0.251.75M2.5标准0.452.1细牙0.352.2M2.6标准0.452.2细牙0.352.25M3标准0.52.6细牙0.352.7M3.5