Cord Locks and Drawstring Stoppers

What Is a Cord Lock or Drawstring Stopper?

A cord lock or drawstring stopper is an adjustable component used to control the movement of a cord, lace, string or compatible round elastic. Pressing the operating button releases or aligns the cord passage. The cord can then be moved to the required position. Releasing the button allows the mechanism to apply pressure and help retain the selected adjustment.

Cord locks provide fast, reusable adjustment on hood openings, waist drawstrings, bag closures, footwear lacing systems, headwear and other gathered textile products.

A cord lock does not finish the cut end of a drawstring. Use cord ends and drawstring tips for the terminal sections. Both component types may be used together on one cord assembly.

Which Cord Lock Should Be Selected?

E-Buttons Cord-Lock Categories

Metal Cord Locks

Metal cord locks are zinc-alloy components available in single-hole, double-hole, round, oval, flat, small, elongated, cube and other decorative body forms.

Metal cord locks may be selected where the adjusting component is intended to remain visible as part of the design. Component weight and surface contact should be tested on fine fabrics, lightweight hoods and delicate products.

Plastic Cord Locks

Plastic cord locks are lightweight adjusters made from plastic or acetal, depending on the model. Single- and double-hole, round, flat, elongated, crescent, mine-shaped and model-specific structures are available.

A plastic body does not prove that the internal spring, colour treatment or complete component is suitable for every washing temperature or outdoor environment.

Single-Hole and Double-Hole Cord Locks

A single-hole cord lock provides one shared passage and is normally used with one cord. Two fine ends may be used together only where their combined compressed dimensions remain compatible with the channel.

A double-hole cord lock keeps two cord ends in separate passages. This arrangement can help maintain parallel routing on hood, waistband and bag applications.

A double-hole model is not automatically stronger than a single-hole model. Holding performance depends on cord size, surface friction, spring pressure and internal passage geometry.

Top-Push and Side-Operated Models

On a top-push cord lock, the operating button is located on the upper part of the body. Pressing it aligns or releases the internal passages so that the cord can move.

On a side-operated or bridge model, the operating direction and cord route depend on the body construction. Check the installed orientation, access to the button and whether the cord can move without excessive bending.

How Does a Cord Lock Hold the Cord?

On a spring-loaded cord lock, the cord passes through openings in the body and moving button. Releasing the button moves the openings away from full alignment, pressing the cord between internal surfaces and restricting movement.

Holding performance depends on:

• Actual cord thickness relative to the passage
• Cord surface friction
• Soft, filled, rigid or elastic cord construction
• Spring pressure and button travel
• Round or rectangular internal geometry
• Direction and level of applied pulling force

How to Measure Cord Compatibility

The opening stated in a product title is the nominal internal passage. It does not guarantee compatibility with every cord carrying the same stated diameter.

Common Cord-Entry Groups

Imperial values below are approximate reference conversions. Use the verified individual product measurements for final selection.

This table is a general selection guide and does not guarantee compatibility. Manufacturing tolerance, braid structure, filling and cord surface may change the result.

Metal and Plastic Cord Locks Compared

A plated zinc-alloy cord lock is not automatically stainless or suitable for saltwater exposure. A plastic body also does not prove that the internal spring and other parts are plastic.

Real-World Applications

• Hoodie, coat and jacket adjustment cords
• Tracksuit, shorts and sportswear waist drawstrings
• Bag, backpack, pouch and drawstring-sack closures
• Shoe, boot and trainer laces
• Adjustment cords on hats, headwear and neck warmers
• Sleeping bags and compatible camping textiles
• Curtain, cover and home-textile gathering systems
• Adjustment points using compatible round elastic

Not every model is suitable for every application. Final approval must be based on the verified dimensions, material, colour, body structure and mechanism information on the individual product page.

How Is a Cord Lock Installed?

1. Measure the normal and lightly compressed cord dimensions.
2. Press the operating button to align the passages.
3. Thread the cord through the correct passage.
4. On a double-hole model, place the two ends in separate channels.
5. Release the button so that the mechanism engages the cord.
6. Pull in the actual operating direction to test slipping.
7. Fit any terminal cord ends after completing the cord route.

Standard spring-loaded cord locks are normally installed by hand and do not require a press or setting die. A separate tool may be required for the terminal cord end.

Incorrect Selection and Use Warnings

• A cord that is too narrow may slip after locking.
• A cord that is too thick may not pass through or may prevent complete button closure.
• Measure both width and thickness when using a flat drawstring.
• Check the compressed diameter of soft and filled cords.
• A very smooth cord may slip despite having a suitable nominal size.
• The number of holes does not determine holding strength by itself.
• A heavy metal cord lock may pull or distort lightweight fabric.
• A fitted cord end may not pass through a cord-lock channel or eyelet.
• Metal or plastic appearance alone does not confirm wash or outdoor suitability.
• Small-part and detachment risks must be assessed separately for children’s products.
• Complete a sample test with the actual cord before wholesale ordering or mass production.

Related E-Buttons Categories

• Cord ends, drawstring tips and cord locks
• Metal cord locks
• Plastic cord locks
• Cord ends and drawstring tips
• Cords, drawstrings and laces

Frequently Asked Questions About Cord Locks

Last updated: 21 July 2026

Business and brand: E-Buttons – Istanbul, Türkiye

Technical verification note: Refer to the individual product page for exact metric and imperial entry dimensions, outside body size, material, finish, colour, pack quantity and mechanism structure.