Blum 70.4503 hinge arm cover cap – Onyx Black

The Blum 70.4503 is an Onyx Black hinge-arm cover cap for selected Cristallo glass-door, 155° wide-angle and thin-door hinge applications. It clips over the hinge arm to conceal the mechanism and provide a cleaner, more finished cabinet interior.

Use the cap only with a compatible hinge arm and check the hinge series, arm profile, application and finish before ordering. The cover cap is a finishing accessory, not a hinge or mounting plate.

Technical details

• Blum part number: 70.4503
• Hart Wholesale SKU: HIO704503
• Type: hinge-arm cover cap
• Compatible applications: selected Cristallo glass-door, 155° wide-angle and thin-door hinge applications
• Material: plastic
• Finish: Onyx Black
• Quantity: one cover cap
• Hinge: supplied separately

Finishing a compatible hinge arm

Clip this cap over a compatible hinge arm after confirming the hinge type and installation arrangement. The Onyx Black finish is intended to coordinate with compatible dark cabinet hardware and conceal the hinge mechanism for a cleaner cabinet interior.

Choosing the correct cover cap

Cover caps are not universal across every hinge family. Compare the hinge series, arm profile, application, fixing arrangement and finish before fitting. If the cap does not seat correctly, remove it and recheck compatibility rather than forcing the accessory into place.

Browse the Blum hinge accessories and the Blum CLIP top hinge range when planning the installation.

Matching components

For the verified nickel version of this cover cap, see Blum HI70.4503. Pair the cap with the compatible hinge arm and check the complete hinge specification before fitting.

Frequently Asked Questions

What is the Blum 70.4503 used for?

It is a finishing cover cap for selected Cristallo glass-door, 155° wide-angle and thin-door hinge applications, helping provide a clean Onyx Black appearance inside the cabinet.

Does this include the hinge?

No. This listing is for one hinge-arm cover cap. The compatible hinge is supplied separately.

Does the cap fit every Blum hinge?

No. Cover caps depend on the hinge arm and product family. Check compatibility before ordering.

What colour is the cap?

It has an Onyx Black finish for compatible dark cabinet hardware.

How many cover caps are supplied?

One cover cap is supplied.

Is a nickel version available?

Yes. The verified nickel version is HI70.4503.