Skip to content

Hareline Uni Big Fly Thread

Sale price $3.99

Color: Tan

In stock

Built for demanding fly tying, this heavy-duty thread is ideal for big saltwater patterns, bass bugs, and other applications where maximum strength and durability matter. Made from polyester (the same material used in classic 6/0 & 8/0), it won’t dull fly-tying scissors and offers reliable handling at the vise.

  • 400 denier for powerful wraps on large flies
  • Tested breaking strength up to 100 oz.
  • Approximately 4x stronger and 4x thicker than typical 6/0 thread
  • Excellent for spinning deer hair
  • Untwists quickly and easily for flat-thread applications
  • Lies flat without the slickness of Kevlar
  • 80 yd. spool

If you’re tying big, tough flies and need a strong thread that handles cleanly, lays flat, and cinches down securely, this is a dependable choice for saltwater, bass, and oversized fly patterns.

Back to top