140 denier thickness provides superior strength for tying large and medium flies
Smooth, flat, and lightly waxed finish ensures easy tying and reduced tangling
Continuous polyester filaments slightly bonded for consistent texture and durability
Available in multiple standard UTC colors for versatile fly patterns
100 yard spool offers ample material for multiple projects
Summarized by Shop
UTC 140 Ultra Thread is a step-up in durability and thickness from its classic line of 70-denier threads. The 140 denier Ultra Thread is the standard for tying big bugs, including hopper patterns, streamers and mice. If you’re tying bigger flies, you’ll want the additional thickness and strength that UTC 140 Ultra Thread provides.
UTC 1
Material
100% nylon
Denier
140
Length
100 yards per spool
Wax
Lightly waxed
Thread type
Flat
Summarized by Shop
4.6
22 ratings
5
4
3
2
1
I like the material.
Good product.
H
HERMEL · January 14, 2026
UTC Ultra Thread 140 Denier
Pleasant, easy, very fast delivery. I think it’s a great shop with lots of options on different materials. I highly recommend them.
W
William · April 15, 2025
Glad I am switching to UTC threads. Good strong and lays flat