51Pcs M6 Beds Cot Flat Socket Furniture Bolts Screw, Barrel Nuts & Allen Key Kit

The kit includes 5 bolt lengths: M6x40mm, M6x50mm, M6x60mm, M6x70mm, and M6x80mm, with 5 pieces of each length, plus 25 M6x12mm barrel nuts and 1 M4 hex key — 51 pieces total.

These M6 furniture bolts and barrel nuts are designed for flat-pack and knock-down furniture including cribs, bunk beds, bed frames, cabinets, wardrobes, bedside tables, and shelving units that use M6 barrel nut connections with a 12mm barrel nut hole.

Barrel nuts (also called cross dowels) are cylindrical nuts that sit in a pre-drilled hole in the wood panel. The bolt passes through the connecting piece and threads into the barrel nut, creating a strong, hidden joint that can be tightened with an Allen key from the outside — and re-tightened if the joint loosens over time.

Yes. These are standard M6 furniture bolts and barrel nuts, making them suitable replacements for lost, stripped, or damaged hardware on most flat-pack bed frames, cribs, and cabinets that use M6 barrel nut connections. Verify the barrel nut hole diameter (12mm) matches your furniture before ordering.

The bolts use an M4 hex socket drive. An M4 Allen key is included in the kit, so no additional tools are required for installation.

All bolts and barrel nuts are made from zinc-plated carbon steel, which provides corrosion resistance and durability for long-term indoor furniture use. The zinc plating also helps threads stay clean and re-usable over multiple assembly and disassembly cycles.

Bolt length depends on the combined thickness of the panels being joined. Generally, the bolt should pass fully through the connecting panel and engage at least 10–15mm into the barrel nut. Measure your panel thickness and add the barrel nut engagement depth to determine the correct length. The 5-length range (40–80mm) covers most standard flat-pack furniture configurations.