I didn't notice the "threat" in the title until I copied it to Google what it was! lol! This is what Mrs. G had to say:
What needle is best for monofilament thread?
Needle Recommendations:- 90/14 or 100/16 Universal, Microtex/Sharp, or Embroidery Needle (40wt, 50wt, or hand-wound monofilament in the bobbin)
- 4.0 Longarm Needle (40wt, 50wt, or hand-wound monofilament in the bobbin)
I didn't know what monofilament thread was. I'd try my metallic needles.