Uni knot
Also called Duncan loop
What is a uni knot?
A versatile fishing knot made by wrapping the tag end inside a loop. One knot ties on hooks, puts line on a reel and, doubled, joins two lines.
Uni knot at a glance
- Wraps for a hook
- Six
- In-Fisherman's guidance
- Wraps to spool a reel
- Two or three
- Joining two lines
- Double uni
- Popularized by
- Vic Dunaway
How do you tie a uni knot?
Run the line through the eye and lay the tag end back along the main line to form a loop. Wrap the tag around both strands inside the loop, six times for a hook, then pull the tag to snug the wraps. Slide the knot down to the eye and pull the main line tight.
What is the uni knot used for?
Its appeal is that one knot does almost every job. It ties on hooks, lures and swivels, it attaches line to an empty reel spool, and two of them tied toward each other make a double uni that joins two lines. Vic Dunaway promoted it as a single knot system in the 1970s, and In-Fisherman still publishes his version.
Why use a double uni to join braid to a leader?
It is easy to learn, forgiving of lines with very different diameters, and strong: In-Fisherman reports breaking strength above 90 percent for the double uni. Give the braid side a few extra wraps, because braid is slicker than mono.
If you only learn one knot, learn this one. It ties on a hook, puts line on a reel and joins braid to a leader.
Common questions
How many wraps does a uni knot need?
In-Fisherman's guidance is six wraps for a hook, four or five when snelling a hook, and two or three when you are only tying line onto a reel spool.
What is a double uni knot?
Two uni knots, each line tied around the other, then pulled together until they meet. It is the common way to join braid to a fluorocarbon or mono leader.
Where this is defined
- The Uni-Knot System, In-Fisherman
Where this comes up
The guides that use uni knot and show it on real gear.
Last reviewed . Uni knot is one of 222 terms in the fishing glossary.