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Home / Assemblies and Fasteners / Stainless Steel Square Tube Connectors Thickened Two-Way Three-Way Fittings for Flower Racks, Shelving Units, and Clothes Drying Racks, Fasteners for 25/30/40 Square Tubes

Attributes

Brand -
Category Standard Parts, Components & Industrial Consumables / Assemblies and Fasteners
Origin -
Material 304 Stainless Steel
Compatible Tube Sizes 20mm, 25mm, 30mm, 40mm
Connector Types Two-Way, Three-Way
Surface Finish Brushed Satin
Wall Thickness Thickened 2.0mm
Load Capacity Up to 150 lbs per joint
Corrosion Resistance High (Indoor/Outdoor)
Installation Method Screw-fixed or Weldable
Package Contents 10 Connectors + Mounting Screws
Application Shelving, Flower Racks, Drying Racks

6 reviews

A

Anonymous

Mar 27, 2026

Rating: 5/5

Exactly what I needed

Clean design and very strong. I used the two-way connectors for a simple flower rack project. The screws provided were good quality, and the whole assembly took less than an hour.

A

Anonymous

Mar 25, 2026

Rating: 5/5

Professional look

These gave my DIY project a professional store-bought look. The brushed finish hides fingerprints well, and the joints are seamless. Will definitely buy more for my next workshop project.

A

Anonymous

Mar 09, 2026

Rating: 5/5

Great for custom drying racks

I built a custom clothes drying rack for my balcony using these three-way fittings. They withstand the outdoor elements well and haven't shown any signs of rust after two months of rain and sun.

A

Anonymous

Mar 09, 2026

Rating: 4/5

Solid construction

Very happy with the thickness of the metal. It doesn't feel cheap like some other brands I've tried. Would recommend measuring your tubes carefully before ordering to ensure the right size match.

A

Anonymous

Mar 08, 2026

Rating: 5/5

Perfect for my garage shelves

These connectors are incredibly sturdy. I used them with 40mm square tubes to build heavy-duty shelving in my garage, and they hold up perfectly under weight. The stainless steel finish looks great too.

A

Anonymous

Mar 06, 2026

Rating: 4/5

Good quality, slightly tight fit

The build quality is excellent and feels very durable. The only reason for 4 stars is that the fit on the 25mm tubes was a bit tight, requiring a rubber mallet to seat them properly. Once on, they are rock solid.

5 FAQ

Q: Are the screws included in the package rust-proof as well?

A: Yes, the included mounting screws are also made of stainless steel to match the connectors and prevent rusting over time.

Q: Do I need to weld these, or can I just use screws?

A: You do not need to weld them. Each connector comes with pre-drilled holes and includes mounting screws for easy assembly, though they can be welded if a permanent bond is desired.

Q: What is the weight limit for a shelf built with these?

A: While dependent on the overall frame design, each joint can typically support up to 150 lbs when installed correctly with appropriate tube thickness. For heavy loads, we recommend using 40mm tubes.

Q: Are these connectors suitable for outdoor use in rainy climates?

A: Yes, made from 304 stainless steel, these connectors offer high corrosion resistance and are suitable for both indoor and outdoor applications.

Q: Will these fit 1-inch square tubes?

A: These are designed specifically for metric sizes: 20mm, 25mm, 30mm, and 40mm. A 1-inch tube is approximately 25.4mm, so they may be slightly loose on the 25mm size or too tight; we recommend using exact metric tubing for best results.

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