Fly Tying Thread Comparison Chart

Choosing the right fly tying thread is one of the most critical—and most misunderstood—decisions at the vise. Thread choice affects far more than durability alone; it determines how materials seat, how cleanly a fly is built, how much bulk is introduced, and how well a pattern holds up through repeated fish.

The Feather Craft Fly Tying Thread Selection Chart was created to eliminate confusion by organizing threads by fly size, application, and performance characteristics, rather than by brand or marketing claims alone. This reference allows you to evaluate thread types across materials and strengths while understanding how they perform in real tying situations—from ultra-fine dry flies to heavy streamers and saltwater patterns. Whether you’re selecting a thread for a specific pattern, substituting materials based on availability, or dialing in the balance between strength and control, this chart is designed to guide confident decisions. Built from decades of tying experience and refined through constant bench use, it’s a practical tool meant to be returned to again and again—every time thread choice matters.