Cross Dowel Barrel Nut Bolt Set

The Cross-Hole Connection Perpendicular

The set is built around cross dowels, which are cylindrical metal barrels with threaded holes running crosswise. Press the barrel nut cross-hole into a pre-drilled hole in the first to line it up with the bolt channel in the succeeding panel. The connecting bolt is pushed through the second panel and then squarely screwed into the side thread of the cross dowel to give an equal connection. The load is transferred through the barrel wall horizontally, not sucked out of a blind end, therefore there is no racking and the connection remains flush. The Cross Dowel Barrel Nut Bolt Set is the standard for flat-pack and ready-to-assemble furniture, with hidden, snag-free fastening.
It works differently from a barrel-axial threaded barrel insert nut. A cross dowel nut turns the bolt 90 degrees so you can make corner and T joints without hardware.

Cross-Hole Size Made to Your Specification

One feature customers ask about most is the cross-hole diameter, and that is precisely where KEY-CNC adds value. The internal cross hole of the barrel nut is not locked to a single size - we machine it to the thread you need, whether that is a fine M4, a common M6, a heavy M8, or a fully custom pitch specified on your drawing. The same flexibility applies to the barrel outer diameter, barrel length, and the connecting bolt's shoulder, length, and head style. Send us a drawing, a sample, or a dimensioned sketch and our English-speaking engineers return a DFM review, usually within 24 hours, confirming the exact hole size and tolerances before any metal is cut. This made-to-print approach keeps the Cross Dowel Barrel Nut Bolt Set compatible with your existing panel thickness and your chosen bolt grade.

Materials and Surface Finishes

Every part in the set is CNC machined from solid stock for true concentricity between the barrel OD, the cross hole, and the bolt thread. KEY-CNC works the same material grades used across our precision fastener range, selected during DFM review for your operating environment:

Surface options include anodizing, plating, sandblasting, and polishing, all RoHS-compliant. Because the barrel and bolt are machined in one CNC setup, thread pitch diameter holds to +/-0.01 mm and the cross hole stays centered for repeatable assembly.

What Ships in the Kit

A standard set ships as a matched pair: one cross dowel barrel nut and one connecting bolt (often a shoulder or hanger-style bolt with a hex, slotted, or Allen drive). We can also supply the set with a purpose-made installation driver, or bundle multiple sizes into a kit bag for mixed production runs. Packaging uses bubble or pearl cotton inside double-layer export cartons, adjusted to the part size and structure so nothing shifts in transit.

Where the Connector Set Is Used

The set fits anywhere two panels meet at 90 degrees and need a removable joint. Common applications include:

Because the bolt enters from the visible face and the nut sits hidden inside the panel, the finished product shows no protruding hardware - a detail designers and end-users both notice.

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