Blum 70T3504 hinge boss cover cap – Onyx Black

The Blum 70T3504 is an Onyx Black replacement cover cap for the boss of compatible 110° CLIP top hinges. It snaps over the hinge boss to conceal the mounting area and provide a cleaner, more finished cabinet interior.

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

Technical details

• Blum part number: 70T3504
• Hart Wholesale SKU: HIO70T3504
• Type: hinge boss cover cap
• Application: compatible 110° CLIP top hinge bosses
• Finish: Onyx Black
• Quantity: one cover cap
• Hinge: supplied separately

Finishing a compatible hinge boss

Snap this cap over a compatible hinge boss after confirming the hinge type and installation arrangement. The Onyx Black finish is intended to coordinate with compatible dark cabinet hardware and conceal the mounting area.

Choosing the correct cover cap

Cover caps are not universal across every hinge family. Compare the hinge series, boss profile, application 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 70T3504 cap, see Blum HI70T3504. Pair the cap with the compatible 110° CLIP top hinge boss and check the complete hinge specification before fitting.

Frequently Asked Questions

What is the Blum 70T3504 used for?

It is a finishing cover cap for compatible 110° CLIP top hinge bosses, helping provide a clean Onyx Black appearance inside the cabinet.

Does this include the hinge?

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

Does the cap fit every CLIP top hinge?

No. Cover caps depend on the hinge boss 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 HI70T3504.