A.N. -06 90 &deg; Bend Reusable Hose End - Non Swivel With METRIC HEX A.N. -06 nut (9/16-18) Thread, has a hex size of 18mm, the hex collar is 19mm. The Female Swivel nut is the wire type, coupled with a 37 JIC concave seat. Fits -06 Hose (.44" I. D.) either SS braided or Nylon braided rubber hose. This Design does not allow rotation to position after assembly. These fittings are anodized in the traditional red and blue.