Quick answer
Use a nickel-free steel chain and attach it with Chicago screws and leather tabs for a durable, removable strap on bags and pouches.
Why steel chain works for leather projects
A steel chain adds industrial durability and a classic look to leather bags and pouches. The 36-inch length from Tandy Leather is long enough for a crossbody strap, and the nickel-free construction prevents allergic reactions on skin.
Pairing the chain with Chicago screws (also called screw posts) lets you attach and remove the strap without permanent hardware. This is especially useful if you want to swap straps between projects or wash the chain separately.
Choosing the right chain and connectors
The Steel Chain from Tandy Leather is 0.1 inches wide (2.5 mm), which fits most standard strap connectors and jump rings. Its nickel-free coating won't tarnish or irritate skin.
For a secure attachment, use Chicago screws that match the thickness of your leather tab (usually 1/8 to 1/4 inch). Avoid split rings or key rings—they can scratch the chain and loosen over time.
How to install a steel chain strap
- Cut and prepare the leather tabs: Cut two strips of leather about 1.5 inches long and 0.5 inches wide. Punch a hole at each end: one for the chain and one for the bag attachment. Sand and burnish the edges for a clean finish. Make sure the holes are slightly larger than the Chicago screw barrel so the screw can pass through easily.
- Attach the chain to the tabs: Open a jump ring or use a pair of pliers to connect one end of the steel chain to the hole in a leather tab. Repeat for the other end. Close the jump ring tightly with pliers. Use two jump rings per side for extra security—one can fail without dropping the bag.
- Secure the tabs to the bag: Insert a Chicago screw through the bag's strap slot or D-ring, then through the second hole in the leather tab. Tighten the screw with a screwdriver or your fingers until snug. Do not overtighten—leather can compress and loosen over time. Apply a drop of thread locker (blue Loctite) to the screw threads to prevent it from loosening during daily use.
- Test the strap strength: Hold the bag by the chain and gently pull in opposite directions. Check that all connections are tight and the chain links don't twist or bind. If the chain feels loose, adjust the jump rings or add a second Chicago screw per tab. Always test with the bag empty first, then add weight gradually to check for weak points.
Product facts
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Steel Chain: Nickel-free metal chain, 36 inches long, 0.1 inches wide. The nickel-free coating prevents skin reactions, and the 36-inch length is ideal for crossbody or shoulder straps without needing to join multiple chains.
Steel Chain