Stopper Knot

A stopper knot is tied in the end of a rope to create a bulky stop. It can help prevent the rope end from pulling through a hole, ring, pulley, cord lock or other fitting.

A stopper knot is not the same thing as properly finishing a rope end. It can slow fraying in the short term, but whipping, melting suitable synthetic rope, or another proper end treatment may still be needed.

Common examples

The overhand knot is the simplest stopper knot. The figure-eight knot is often easier to inspect and usually easier to untie after light loading.

Practical uses

Use a stopper knot on drawstrings, light pull cords, temporary workshop lines and similar non-critical tasks where the knot remains visible and can be checked.

Common mistakes

• Assuming any stopper knot is large enough for any hole or fitting.
• Letting the tail become too short.
• Using a stopper knot as a substitute for a proper attachment knot.
• Forgetting that some knots jam badly after loading.

Safety note

Do not rely on a stopper knot as the only protection where a rope pulling through would cause injury or serious damage. Use a properly designed system for critical work.