Female thread connection for use with the ship's male thread air outlet. Made of cast bronze with Metric Fine Thread (JIS B 0207) of M42 x 2 for respective hose end connection thread size.
与船的外螺纹风口一起使用的内螺纹连接。由铸造青铜制成,米制细螺纹(JIS B 0207)为M42 x 2,适用于相应的软管末端连接螺纹尺寸。