UTC Ultra Thread 70 Denier Yellow Olive – Fly Tying Thread, 100 yd Spool

Engineered for Fly Tying Excellence

UTC's Ultra Thread is not a generic thread. It is designed from the ground up for fly tyers who want more predictable tension, cleaner wraps, and durable results across a wide range of pattern styles.

What sets UTC Ultra Thread apart

• Engineered specifically for fly tying, not an off the shelf option
• Nylon over polyester for better stretch, grip, and color depth
• Flat profile with minimal twists for easier wraps near the eye
• Lightly waxed to limit buildup and improve cement penetration
• Non-bonded, ideal for split thread techniques
• 100 yards per spool with color coded end caps
• Available in four sizes and 33 colors

How it feels and performs in hand

In the tying vise, you’ll notice a smooth, slick feel as the thread passes over materials. The nylon’s natural stretch helps maintain even tension without over-tightening, while the flat profile keeps wraps tight without bulk. The subtle wax improves flow and you can expect cement to penetrate for a durable finish.

Real-world use cases and benefits

• Small dry pattern work where a flat wrap preserves delicate heads and reduces bulk
• Tying near the hook eye where controlled tension matters
• Split-thread techniques that benefit from a flexible, non-bonded thread
• Vibrant color depth that remains visible through handling and finish

What you get on each spool

Each spool holds 100 yards of thread, designed to feed smoothly from standard bobbins. The lightly waxed coating reduces buildup and helps cement penetration for a clean, durable finish. Four sizes and 33 colors offer versatile choices for different waters and patterns.