They’re commonly called ball chain keychains, but you’ll also see other names depending on use and style.

• Ball chain or bead chain: General terms for the linked metal beads.
• Beaded keychain or ball link chain: Often used for key tags and small accessories.
• Dog tag chain: When longer lengths are worn as a necklace for ID tags.
• Pull chain: When used for ceiling fans or pendant pulls, though the chain style is similar.

On Walmart.com, you’ll find these listed with details like bead diameter (commonly 2.4 mm), length (short key loops to long necklaces), and material (stainless steel, plated metal, or colored finishes). Browsing those terms can help you spot the right style for your project.

A few small tweaks can help reduce accidental disconnects without overcomplicating things.

• Match sizes: Pair the chain and connector of the same bead diameter (e.g., 2.4 mm to 2.4 mm) so the end bead seats properly.
• Seat the connector: Push the last bead fully into the connector slot until it “catches.” A gentle tug can confirm it’s engaged.
• Use an intermediary: Add a small split key ring to the item, then clip the ball chain to that ring to reduce twisting and wear on the connector.
• Avoid overload: Ball chains are best for keys, tags, and lightweight accessories; heavy tools may stress the connector.
• Inspect and replace: If a connector looks bent or worn, swapping it out can improve hold.

1. Check the hole size: Make sure the item’s hole fits your chain’s bead diameter (2.4 mm is common for key tags).
2. Thread the chain: Slide the chain through the item’s hole or a small split ring.
3. Connect the ends: Insert the last bead into the connector’s slot until it clicks in. The bead should sit snugly.
4. Adjust length if needed: Carefully remove extra beads with small wire cutters. Work slowly and avoid sharp edges.
5. Test lightly: Give a gentle pull to confirm the connector is engaged.

Many chains include connectors in the pack. If you’re attaching multiple items, consider bulk sets so you have spares for future projects.

Durability varies with material, bead size, and how you’ll use them.

• Material: Stainless steel chains generally offer strong, corrosion-resistant performance for everyday keys. Plated iron and colored finishes can be more budget-friendly but may show wear faster in humid or abrasive conditions.
• Bead diameter: Slightly larger beads (e.g., around 2.4 mm) often feel sturdier than very fine chains, which are better for light tags.
• Connector wear: Connectors are the typical failure point. Keeping extras on hand and replacing worn ones can extend life.
• Care: Wipe dry after exposure to moisture and avoid overloading with heavy tools.

For daily key carry, choosing a stainless steel chain with a matching connector can provide dependable use.

Choose size by bead diameter, length, and the hole on your key tag.

• Bead diameter: Around 2.4 mm is a popular, sturdy choice for key tags and accessories. Finer chains (about 1.5–2.0 mm) are lighter but better for small, lightweight items.
• Length: Short loops of about 4–6 inches work well for keys, fobs, or labels. Longer lengths (24–30 inches) are typically for ID or dog tag necklaces.
• Fit check: Make sure the tag’s hole accommodates the bead size. If it’s tight, use a small split ring as an intermediary.
• Extras: Bulk packs with connectors and assorted colors make it easy to outfit multiple keys.

You can filter by diameter and length on Walmart.com to compare options.