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Home / Assemblies and Fasteners / Square Tube Connector, Weld-Free Fixing Clip for 20/25/30 Stainless Steel Square Tubes, Galvanized Square Steel Fixtures, Aluminum Alloy

Attributes

Brand -
Category Standard Parts, Components & Industrial Consumables / Assemblies and Fasteners
Origin -
Material High-Grade Carbon Steel with Zinc Plating
Compatible Tube Sizes 20mm, 25mm, 30mm Square Tubes
Surface Finish Galvanized for Corrosion Resistance
Installation Type Weld-Free Bolted Connection
Load Capacity Up to 150 kg per connector (static)
Bolt Specification M8 Hex Head Bolts Included
Application Range Shelving, Railing, Framing, Displays
Package Quantity 10 Connectors per Pack
Weight per Unit 85 grams
Country of Origin Manufactured in ISO 9001 Certified Facility

6 reviews

A

Anonymous

Mar 30, 2026

Rating: 4/5

Sturdy but instructions could be better

The build quality is excellent and holds my 25mm tubes very securely. I deducted one star because the included instruction diagram was a bit small to read clearly.

A

Anonymous

Mar 25, 2026

Rating: 5/5

Great value for money

Bought these for a custom clothing rack. They are much cheaper than buying pre-made frames and just as strong. Highly recommend for aluminum or steel tubes.

A

Anonymous

Mar 19, 2026

Rating: 3/5

Good product, missing one bolt

The connectors themselves are fine, but one of the packs I received was missing a single M8 bolt. Had to run to the hardware store to finish the project.

A

Anonymous

Mar 18, 2026

Rating: 5/5

Perfect for DIY Shelving

These connectors made building my garage storage shelves incredibly easy. No welding needed, just tighten the bolts and it's solid. The galvanized finish looks great too.

A

Anonymous

Mar 15, 2026

Rating: 5/5

Exactly what I needed

Fits my 30mm stainless steel tubes perfectly with no wobble. The zinc plating seems durable, so I expect these to last outdoors under my patio cover.

A

Anonymous

Mar 11, 2026

Rating: 5/5

Professional look for home projects

Used these to create a modern room divider. The clean lines and hidden fasteners give it a very professional, store-bought appearance. Very satisfied.

5 FAQ

Q: Do I need special tools to install these?

A: No special tools are required. A standard wrench or socket set that fits M8 bolts is all you need to tighten the clamps onto the square tubes.

Q: What is the maximum weight this can hold for a horizontal shelf?

A: While dependent on the tube quality and span, each connector is rated for up to 150kg of static load. For heavy shelves, we recommend using a connector every 60cm.

Q: Can these connectors be used with round tubes?

A: No, these clips are specifically designed with a square profile to fit 20mm, 25mm, and 30mm square tubes only. They will not secure round tubing effectively.

Q: Are the bolts included in the package rust-proof?

A: Yes, the included M8 bolts share the same galvanized coating as the connectors, providing good resistance to rust for indoor and covered outdoor use.

Q: Will this work with painted aluminum tubes?

A: Yes, these connectors work well with painted aluminum alloy tubes. The rubberized inner grip helps prevent scratching the paint while ensuring a tight fit.

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