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Home / Connectors and Fasteners / 40*40 Galvanized Square Tube Connector for Shelving Guardrails – Weld-Free Fixed Joint for 30 Square Steel Tubing Fasteners

Attributes

Brand -
Category Industrial Small Parts / Connectors and Fasteners
Origin -
Material High-Strength Carbon Steel
Surface Treatment Hot-Dip Galvanized
Compatible Tube Size 40x40mm Square Tube
Connector Types 3-Way and 4-Way Joints
Installation Method Bolted Assembly
Welding Required No
Fastener Type Hex Head Bolts
Package Contents 10 Connectors with Hardware
Finish Color Metallic Silver
Primary Application Industrial Shelving and Guardrails

5 reviews

A

Anonymous

Apr 25, 2026

Rating: 5/5

Perfect fit

Exactly what I needed for 40mm tubes. The 3-way and 4-way options allowed me to build a complex frame easily.

A

Anonymous

Apr 14, 2026

Rating: 4/5

Good value

Fit well but were a bit tight initially. Once tightened, they hold the structure securely. Good value for the price.

A

Anonymous

Apr 08, 2026

Rating: 4/5

Durable coating

Galvanization looks thick and should prevent rust. Only giving 4 stars because shipping took a bit longer than expected.

A

Anonymous

Mar 30, 2026

Rating: 5/5

No welding needed

Saved me a lot of time not having to weld. The bolts are strong and the galvanization looks durable. Highly recommend for DIY shelving.

A

Anonymous

Mar 29, 2026

Rating: 5/5

Sturdy and reliable

Used these for a warehouse rack project. They fit the 40mm tubes perfectly and feel very solid. No welding needed which saved me a lot of time.

5 FAQ

Q: Are tools included in the package?

A: No, tools are not included. You will need a standard wrench or socket set for assembly.

Q: Is it rust resistant for outdoor use?

A: Yes, the hot-dip galvanized coating provides excellent rust resistance for outdoor environments.

Q: Does this fit 30mm tubes?

A: This specific listing is designed for 40x40mm tubes. We have separate listings for 30mm compatibility.

Q: Can I disassemble the structure later?

A: Yes, since these are bolted connections, you can disassemble and reassemble the structure as needed.

Q: What is the maximum weight capacity?

A: Capacity depends on the overall frame structure and tube thickness. Please consult engineering specs for heavy loads.

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