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Front three-quarter view of Uni 3/0 Thread spool showcasing yellow fly-tying thread on a white background
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Front view of Uni 3/0 Thread spool showcasing orange thread and 3/0 size with a white background
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Front view of Uni 3/0 Thread spool showcasing gray thread, 100 yard label, and 3/0W marking on a white background
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Front view of tan Uni 3/0 Thread spool showcasing tightly wound thread with a white background
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Front view of Uni 3/0 Thread spool showcasing brown thread and 3/0 W label on a white background
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Front view of Uni 3/0 Thread spool showcasing wine-colored thread with black rims on a white background
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Front three-quarter view of red UNI-Thread 3/0 fly tying thread spool showcasing tightly wound thread on a white background
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Front view of Uni 3 0 Thread spool showcasing olive thread and Olive label on a white background
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Front view of Uni 3/0 Thread spool showcasing black thread on a white background
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Front view of a white UNI-Thread 3/0 spool showcasing the thread and 100-yard label on a white background
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Home | UNI Products

Uni 3/0 Thread

checkmark in a circle In Stock • Bozeman, MT
Price:
$4.50
Color Option: Yellow
qty: 12 Available
qty
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Description

UNI-Thread is one of the most trusted and widely used fly tying threads in the world, valued for its strength, smoothness, and consistency. Made from continuous twisted polyester filaments, it lays flat and doesn't fray like many flat threads. It is lightly waxed and comes on 200yd spools. Size 3/0 is for flies at least #12, but generally larger.

Size Guidance:

  • 8/0: Best for small dry flies, midges, and delicate patterns where a fine thread is required.

  • 6/0: The workhorse size—ideal for most nymphs, streamers, medium-to-large dry flies, and general trout flies. Strong enough to secure bulky materials like deer hair, hackle, and dubbing loops while still thin enough for clean heads.

  • 3/0: Heavier, stronger thread designed for large streamers, saltwater patterns, and bass or pike flies. Provides the strength needed to bind down big, buoyant, or slippery materials such as bucktail without risk of breaking.