Flange Joint Square Internal – Topclamp Original

The flange joint square internal combines the broad, stable base of the square flange with an internal mounting mechanism. Instead of clamping around the outside of the tube, this fitting inserts into the tube end and anchors it to a flat surface via a square base plate, keeping the exterior of the tube completely unobstructed. It is part of the Topclamp Original modular building system and available in tube dimensions of 29.8, 38.4, and 47.1 mm.

Finishing options are consistent with the full Topclamp Original range. Natural aluminum is supplied as standard, with anodized, chrome-plated, and nickel-plated treatments available on request alongside any RAL color. The preferred surface treatment is specified in the order comments field.

The flange joint square internal is the internal counterpart of the external square flange, chosen when the stability of a broad base plate is needed but an uninterrupted exterior tube surface is equally important. It is well suited to freestanding display structures, architectural floor-mounted installations, and any modular build where the mounting hardware should remain out of sight. As with every component in the Topclamp Original catalog, the flange joint square internal is produced entirely on demand to match the exact requirements of each project.