M4 x 12.0 Aluminium Rivet Nut (Countersunk)

An M4 Aluminium Countersunk Rivet Nut is a lightweight, corrosion-resistant fastener creating a strong, flush-mounted threaded insert in thin materials (like sheet metal, up to ~2mm), requiring a ~6mm hole and a special tool (riv nut gun) to deform its body, providing durable M4 threads for bolting without protruding, perfect for automotive, electronics, and fabrication where a smooth finish is needed. 

Key Characteristics:

• M4 Thread: Standard metric thread size, often with a 0.7mm pitch.

• Aluminium: Offers lightweight properties and excellent corrosion resistance.

• Countersunk Head: Designed to sit flush (flat) with the material surface for a professional, snag-free finish, unlike domed heads.

• Grip Range: Specifies the material thickness (e.g., 1.5-3.0mm) it can securely fasten into.

• Hole Size: Requires a specific drill size, typically around 6.0mm for M4 countersunk types.

• Installation: Installed into a pre-drilled hole using a rivnut tool, which pulls a mandrel to expand and anchor the nut. 

When to Use:

• Adding strong, removable threads to thin sheet metal, plastics, or composites where traditional tapping isn't feasible or strong enough.

• Applications needing a smooth external surface, like vehicle body panels, enclosures, or decorative work.