We have designed many -6 AN male fittings to various male metric threads, they can seal with o'ring or aluminum crush washer. Some are available in steel or aluminum (D).
P/N 10100-06 -6 AN to 10mm 1.00 thread
P/N 12100-06 D -6 AN to 12mm 1.00 thread
P/N 12125-06 D -6 AN to 12mm 1.25 thread
P/N 12150-06 D -6 AN to 12mm 1.50 thread
P/N 14150-06 -6 AN to 14mm 1.50 thread
P/N 14150-06 D -6 AN to 14mm 1.50 thread
P/N 16150-06 -6 AN to 16mm 1.50 thread
P/N 16150-06 D -6 AN to 16mm 1.50 thread
P/N 18150-06 -6 AN to 18mm 1.50 thread