As part of the wide range of Goodridge hose adaptors the 306 series are a male to male adaptor featuring AN (JIC) threads on one end and a metric thread with a concave seat on the other end.
The Goodridge Male To Male JIC - Metric Concave Seat Thread - 4 (7/16 x 20) - M12 x 1mm In Anodised Aluminium, Blue is a fitting product for applications requiring a M12 x 1mm male counterbore thread in anodized aluminium, such as in automotive, motorcycle, or industrial equipment.
