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Home / Assemblies and Fasteners / Built-in Groove Connector 2020/3030/4040/4545 Aluminum Profile Accessory L-Type Right-Angle Fastener European/National Standard

Attributes

Brand -
Category Standard Parts, Components & Industrial Consumables / Assemblies and Fasteners
Origin -
Material High-Strength Aluminum Alloy 6063-T5
Surface Treatment Anodized Silver Finish
Compatible Profiles 2020, 3030, 4040, 4545 Series
Connector Type L-Type Right-Angle Internal Groove
Standard Compliance European and National Industrial Standards
Installation Method Slide-in T-Slot Assembly (No Drilling Required)
Load Capacity Suitable for Medium-Duty Structural Frames
Package Contents 4 Connectors with Matching Spring Nuts and Bolts
Corrosion Resistance Excellent Resistance to Oxidation and Wear
Application Scope CNC Machines, Workbenches, Safety Guards, Shelving

6 reviews

A

Anonymous

Mar 20, 2026

Rating: 4/5

Good quality, instructions could be better

The aluminum quality is top-notch and feels very durable. I used them for a workbench frame. Only giving 4 stars because the package didn't include a detailed diagram, but once you figure out the orientation, it's easy.

A

Anonymous

Mar 19, 2026

Rating: 5/5

Exactly what I needed

Searched everywhere for compatible 3030 connectors and these fit flawlessly. The internal groove design keeps the exterior of the frame clean and smooth. Great product for professional-looking assemblies.

A

Anonymous

Mar 09, 2026

Rating: 5/5

Sturdy and reliable

I've built several shelving units using these L-type fasteners. They hold significant weight without bending or slipping. The included bolts are high grade too. Will buy again for my next project.

A

Anonymous

Mar 07, 2026

Rating: 5/5

Great for modular designs

These allow me to reconfigure my workshop setup easily. The connection is strong enough for heavy tools but can be disassembled if needed. Excellent value for the price.

A

Anonymous

Mar 05, 2026

Rating: 4/5

Solid construction

Very happy with the build quality. The machining is precise with no burrs. I deducted one star only because shipping took a bit longer than expected, but the product itself is perfect.

A

Anonymous

Mar 04, 2026

Rating: 5/5

Perfect fit for my CNC frame

These connectors slid right into the 4040 profiles without any forcing. The anodized finish matches perfectly, and the joint is incredibly rigid once tightened. Highly recommended for DIY machine builds.

5 FAQ

Q: What is the maximum load capacity for a single connector?

A: While dependent on the specific profile wall thickness, a single connector in a 4040 profile can typically support over 100kg in static shear applications. We recommend distributing loads across multiple joints for dynamic applications.

Q: Do I need to drill holes in the aluminum profiles to install these?

A: No drilling is required. These are designed to slide directly into the T-slot groove of the profile and are secured with the included spring nuts and bolts.

Q: Is the material suitable for outdoor use?

A: The anodized finish provides good corrosion resistance for general outdoor use. However, for harsh marine environments or constant exposure to chemicals, we recommend additional protective coatings.

Q: Does the package include the necessary screws and nuts?

A: Yes, each order comes complete with the L-type connectors, matching T-nuts, and high-tensile bolts required for immediate installation.

Q: Are these compatible with 20mm x 20mm profiles?

A: Yes, this set includes connectors specifically designed for the 2020 series profile dimensions.

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