Essential Furniture Fixings and Fasteners Explained

Whether you are assembling flat-pack units, building bespoke cabinetry, or reinforcing an existing carcass, choosing the correct furniture fixings fasteners is critical for long-term structural integrity. Different materials, loads, and aesthetic requirements dictate specific hardware choices. Understanding how each fixing operates ensures clean lines, robust joints, and reliable assemblies.

Cam Lock Fittings and Connecting Pins

Cam lock fittings—often referred to as minifix or eccentric cams—are the backbone of modular flat-pack furniture. They allow for strong right-angle joints that can be repeatedly assembled and dismantled without damaging the panels.

• Cam Housing: Sits flush within a pre-drilled shallow hole (typically 15 mm in diameter) on the interior face of the panel.
• Connecting Pin (Steel Dowel): Screws directly into the mating panel or an expanding socket. As the cam rotates, its internal ramp draws the pin tightly inward.
• Best Use: Carcass construction for wardrobes, bookcases, and sideboards made from chipboard or MDF where hidden internal joints are preferred.

Wooden Dowels and Biscuit Connectors

Wooden dowels remain one of the most dependable, traditional methods for aligning and strengthening panel joints. Used predominantly alongside adhesive or complementary mechanical fixings, they provide high shear resistance.

Standard fluted wooden dowels (commonly 6 mm, 8 mm, or 10 mm in diameter) allow excess glue to escape while expanding slightly to lock panels together. For best results, use dowels in combination with cam locks or confirmat screws to prevent the joint from pulling apart under tension while the glue cures.

Confirmat Screws: High-Strength Direct Fastening

Confirmat screws are purpose-designed for edge-to-face joints in composite boards like MDF, plywood, and particleboard. Unlike standard wood screws, they feature a thick steel core, deep threads, and a stepped shoulder under the head.

• Stepped Drilling: They require a stepped pilot drill bit that matches the screw profile, ensuring maximum thread engagement without splitting the panel edges.
• Holding Power: The large thread pitch grips raw core material securely, making them ideal for heavy-duty carcass assembly, such as kitchen base units and workshop shelving.
• Head Finish: Typically driven with a hex (Allen) or Pozidriv bit, the heads sit flush and can be concealed using matching plastic caps.

Connecting Bolts and Sleeve Nuts

When joining two separate carcasses together—such as adjacent kitchen base units or modular wardrobe sections—connecting bolts provide an ultra-secure, flush clamp.

These fasteners consist of a male threaded bolt and a female threaded sleeve nut. Both ends feature low-profile, decorative heads (often with a slot, Pozidriv, or hex drive). To install, simply clamp the cabinets together, drill a clean clearance hole (usually 5 mm or 8 mm) through both side walls, and tighten the bolt into the sleeve. This eliminates panel movement and keeps front cabinet edges perfectly flush.

Corner Brackets, Modesty Blocks, and Angle Plates

Where internal panels require extra support or face frame reinforcement, mechanical brackets offer a straightforward, durable solution.

Selecting the Right Fixings for Your Project

When selecting your furniture fixings fasteners, always consider panel thickness (typically 15 mm, 18 mm, or 25 mm in UK joinery), the expected load, and whether the furniture will ever need to be flat-packed again. While confirmat screws provide the greatest rigid strength for permanent builds, cam fittings and connecting bolts offer the versatility required for knockdown, modular systems.