M6 M8 Galvanised Furniture Connecting Bolts with Barrel Nuts | Slotted & Phillips | 8mm–120mm

Measure the total thickness of the panels being joined, then add approximately 5–10mm for the barrel nut recess. For example, joining two 18mm panels typically calls for a bolt in the 35–45mm range. Our range covers 8mm (5/16") through 120mm (4-3/4") to suit most flat-pack and cot-bed assemblies. When in doubt, measure the original bolt or consult your furniture's assembly guide.

Slotted drive requires a flat-head screwdriver and is the traditional style found on many European flat-pack kits. Phillips drive uses a cross-head screwdriver and is generally easier to use with power tools. Both drive styles are available in M6 and M8 across the full length range — choose based on the tools you have available or the style specified in your furniture's manual.

These bolts are manufactured from galvanised steel, which generally provides solid shear and tensile strength suitable for standard furniture assembly loads such as cot beds, wardrobes, and shelving units. For structural or load-bearing applications beyond typical furniture use, we recommend contacting us to confirm suitability for your specific application.

The galvanised zinc coating provides meaningful corrosion resistance, making these bolts suitable for occasional moisture exposure such as a garage workshop or covered outdoor furniture. For prolonged outdoor exposure, coastal environments, or direct weather contact, stainless steel fasteners are typically recommended for long-term performance.

These bolts use the ISO metric coarse thread standard — M6 and M8 — which is the most common thread type used in European flat-pack furniture and cot beds. They are compatible with standard M6 and M8 barrel nuts (included in each set). Most major flat-pack furniture brands including IKEA, Argos, and similar manufacturers use this thread standard, but always verify the diameter and length required by your specific piece before ordering.

Each set is a matched pair — one connecting bolt and one barrel nut. Sets are available in packs of 2, 5, or 10 depending on the size selected. The packing quantity is clearly shown in the variant selector so you can order exactly what your project requires without over-buying.

For Slotted drive bolts, you need a flat-head screwdriver. For Phillips drive bolts, a cross-head (Phillips) screwdriver or compatible power driver bit is required. The barrel nut is typically inserted into a pre-drilled cross-hole in the panel and tightened by rotating the bolt — no specialist tools are needed beyond a standard screwdriver.