These spiral inserts are inserted into a pre-drilled hole by screwing them in. The external projections bite into the wood, preventing the nut from either turning or being pulled out.

Type d inserts are advantageous over barrel nuts and T-nuts because they can be installed from one side of the workpiece.

Suitable for soft woods such as pine, plywood, fiberboard, etc.

• Material: zinc alloy
• Size: M10x18mm
• Quantity: 12 pieces total

For easier installation, drill a hole of appropriate size before installation, enlarging the hole when the material is harder.