How to Install Threaded Inserts in Wood

Quick Answer

Installing threaded inserts in wood requires a precise pilot hole, the correct insertion tool, and careful alignment to avoid stripping or misalignment. The Infinity Tools Threaded Insert Pack offers a range of sizes for common applications.

Step-by-Step Installation

1. Drill the Pilot Hole: Select a drill bit that matches the outer diameter of the threaded insert. Drill a straight hole to the depth of the insert length. For hardwoods, drill slightly deeper to ease insertion. A too-small hole can split the wood; a too-large hole won't grip the insert.
2. Prepare the Insert: Thread the insert onto the installation tool (a hex key or dedicated driver). If using a screwdriver, clamp the insert in a vise and turn the wood piece onto it. Apply a drop of wax or soap to the insert threads for easier driving. Never force the insert—lubrication prevents galling and breakage.
3. Drive the Insert: Align the insert perpendicular to the wood surface. Turn it clockwise until the top is flush with or slightly below the surface. Stop immediately if resistance increases—back out and check for debris or a misaligned hole. Over-tightening can strip the wood or snap the insert. Flush is perfect.
4. Test the Fit: Screw in the bolt by hand to verify smooth engagement. If it binds, remove the insert and re-drill the pilot hole to the correct size. For repeated assembly, use a thread-locking compound on the bolt (not the insert). A loose bolt means the insert is too deep or the hole is too large.

Product Facts

• Infinity Tools Threaded Insert Pack: Available in 1/4-20, 5/16-18, 3/8-16, and 1/2-10 thread sizes. You can match the insert to your project's bolt size, ensuring a secure fit for both light and heavy-duty applications.