Nail Knot

( Tube Knot | Gryp Knot )

Animation: Nail Knot

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Usage

The Nail Knot, also known as the Tube Knot or Gryp Knot, is commonly used in carp and fly fishing to securely attach a line to a leader without adding bulk. It's ideal for joining two lines of different diameters, allowing the line to taper smoothly down to the fly. The knot is tied by wrapping the working end around the standing part and a small tube or nail (hence the name), which is then removed before tightening the knot.

Common Uses

  • attach a leader to a fly line with a slim, smooth connection.
  • connect a backing line to a fly line on a reel.
  • join two fishing lines of different thickness (monofilament to fly line).
  • make a low-profile connection that slides easily through rod guides.

Also known as

  • Tube Knot
  • Gryp Knot