UTC 140 Denier Tying Thread
A very smooth thread that builds heads slowly, offering a consistent and reliable tying experience.
Lightly waxed for ease of use, this thread provides a pleasant handling feel when tying flies.
With a 140 Denier rating equivalent to Danville 3/0, it is flatter and more manageable in tight spaces.
Delivers 2 lbs of break strength, making it exceptionally strong for durable fly construction.
Recommended for flies sized #6 to #14, favored by professional tiers for its balance of strength and smoothness.
| Specification | Value |
|---|---|
| Denier | 140 |
| Break Strength | 2 lbs |
| Recommended Fly Size | #6 to #14 |
| Finish | Lightly waxed |
FAQ
What is the break strength of the UTC 140 Denier Tying Thread?
The thread has a break strength of 2 lbs.
Is this thread suitable for tying small flies?
Yes, it is recommended for flies sized #6 to #14, making it ideal for small to medium-sized flies.
How does the 140 Denier compare to Danville 3/0?
The 140 Denier is equivalent to Danville 3/0 in strength but is flatter and more suitable for tight tying applications.




Alan Scott –
Used this thread for tying a batch of #8 dry flies. It’s smooth and easy to work with, and the wax helps prevent fraying. Strong enough to hold up in the water without breaking. Great for consistent head building.
Victor Morrison –
Professional tiers I’ve spoken to recommend this thread for its balance of strength and smoothness. It holds well during casting and doesn’t fray easily.
Elizabeth Arnold –
Works well for flies in the #10 range. A bit flatter than expected, which helps with tight knots. Slight waxiness makes it pleasant to handle during tying sessions.
Colin Bell –
Highly satisfied with the strength and consistency. The 2 lb break strength is impressive for a tying thread. No issues with knot security or thread pull during use.