4 cm / 1.57 in Round Spring Gate Ring for Bags T0052

This 4 cm / 1.57 in round spring gate ring is a zamak metal connector designed for bag straps, chains, wallets, keychains and removable accessories. A spring-loaded section of the ring opens inward, allowing compatible hardware to be added without threading it through a permanently closed ring. This makes it a practical choice for designs with detachable straps, interchangeable chains, bag charms or accessory parts that may need to be removed and reattached.

Exact Measurements of the 4 cm / 1.57 in Ring

The product is sold in the 4 cm / 1.57 in size class. Its exact inner diameter is 38 mm (1.50 in), while the outer diameter is 47 mm (1.85 in). The metal body is 4.6 mm (0.18 in) thick. Use these exact measurements—not only the rounded title size—when checking whether the ring will fit your project.

• Inner diameter: 38 mm / 1.50 in
• Outer diameter: 47 mm / 1.85 in
• Body thickness: 4.6 mm / 0.18 in
• Material: Zamak metal
• Available finishes: Nickel, black nickel and gold
• Minimum order: 50 pieces

How the Spring Gate Works

The gate opens inward when pressed, creating a temporary entry point for a chain, hook, strap end or accessory component. Once released, the spring-loaded section returns to its closed position. The ring itself does not separate into two pieces.

A component fitting inside the 38 mm / 1.50 in opening does not automatically mean it will fit through the gate. The thickness of the chain link, hook, leather tab or metal attachment must also be compatible with the gate opening. Test the ring with the actual components before beginning repeat or large-volume production.

Uses in Bags and Accessories

The ring can be considered for handbags, shoulder bags, wallets, camera bags, keychains, accessory chains, belts, leather goods and other designs that require an openable round connection point. It is especially useful when a strap, chain or decorative accessory needs to be attached after the main product has been assembled.

When the ring remains visible, its round shape also becomes part of the finished design. Matching the nickel, black nickel or gold finish with the other hooks, chains, rivets and metal components can give the final product a more coordinated appearance.

Spring Gate Ring vs. Closed O-Ring

A standard O-ring is permanently closed. Attaching it may require sewing a strap around the ring, riveting a leather tab or adding a separate hook. A spring gate ring includes an openable section, allowing compatible parts to be attached or removed without rebuilding the entire connection.

This difference is useful in detachable shoulder straps, interchangeable bag chains, keychain assemblies, removable charms and modular accessory designs. A closed O-ring may still be the better choice when the connection is intended to remain permanently fixed.

How to Select the Right Size

Compare the exact inner diameter, outer diameter and body thickness with the strap end, chain link, hook or accessory component used in your project. The attached part must fit through the spring gate and still have enough room to move inside the ring.

A ring that is too large may look visually unbalanced or allow the connected part to move excessively. A ring that is too small may restrict movement or prevent the component from passing through the gate. Testing a sample with the actual materials is the safest way to confirm fit before production.

This item is not a load-rated safety carabiner. No verified load capacity is provided. Do not use it for climbing, personal protection or any safety-critical application involving people, animals or suspended loads.

Finish and Custom Order Options

Standard options include nickel, black nickel and gold. If your project requires another finish, a different size or a high-volume production run, contact us with the intended application, required dimensions and order quantity. Custom requests are evaluated according to technical suitability and current production conditions.

Frequently Asked Questions

What is the actual inner diameter of the 4 cm / 1.57 in ring?

The exact inner diameter is 38 mm (1.50 in). The outer diameter is 47 mm (1.85 in), and the metal body is 4.6 mm (0.18 in) thick. The 4 cm / 1.57 in measurement in the title identifies the rounded commercial size class.

What material is the spring gate ring made from?

The ring is made from zamak metal. The product page offers nickel, black nickel and gold finish options.

Can it be used for a detachable bag strap?

Yes, provided that the strap end, chain link or connector can pass through the spring gate and move properly within the 38 mm (1.50 in) inner opening.

Does the ring separate into two pieces?

No. One section opens inward through a spring-loaded mechanism, but the ring body does not separate into two independent pieces.

Which finishes are available?

The listed finish options are nickel, black nickel and gold. Select a finish that coordinates with the other visible metal hardware used in the product.

What is the minimum order quantity?

The minimum order quantity shown on the product page is 50 pieces.

Can this ring be used for heavy loads or safety equipment?

No verified load capacity is provided. It should not be treated as a safety carabiner or used for climbing, personal protection or other safety-critical load-bearing applications.