Threaded brass wood inserts create strong, reusable machine threads in wood. They are ideal when you need a clean, durable connection that can be assembled, disassembled, or tightened over time without damaging the wood fibers.
Common Uses
- Furniture assembly: knock-down legs, bed rails, chairs, tables, and case goods
- Cabinetry and millwork: adjustable shelves, hardware mounting points, removable panels
- Fixtures and displays: retail fixtures, trade-show components, jigs, shop fixtures
- Repairs and upgrades: stripped screw holes, hinge mounts, high-wear joints
- Equipment and instruments: speaker cabinets, musical instruments, vibration-resistant enclosures
Key Benefits
- Reusable strength: machine screws can be removed and reinstalled without degrading the joint
- Clean alignment: machine threads improve alignment and clamping force
- Split-resistant: load is distributed over a larger area than wood screws
- Corrosion-resistant brass: resists rust and galling in many environments
- Professional finish: hidden, flush, and repeatable fastening points
Choosing the Right Insert
- Thread size: match machine screw thread (e.g., 10-24, 1/4-20, M6)
- Insert OD and length: engage enough fibers without breakthrough
- External thread style: coarse or cutting flutes for hardwoods; deeper threads for softwoods
- Drive type: hex-drive or slot-drive; hex-drive resists cam-out
- Through vs. closed end: through-hole for longer screws; closed-end to protect the far face
Installation Best Practices
- Mark and drill the recommended pilot hole diameter square to the surface.
- Add a light countersink so the insert starts cleanly and sits flush.
- Drive straight with the proper hex-driver or insert tool; avoid excessive torque.
- Use a small amount of paste wax in hardwoods to reduce friction.
- Test fit machine screw length to avoid bottoming out.
- For vibration-prone joints, use thread-locker on the machine screw.
Pro Tips
- In end-grain, consider a longer insert for additional holding power.
- For stripped holes, plug with a glued dowel, let cure, re-drill, and install the insert.
- Protect painted or veneered surfaces with tape before drilling.
Get the Right Hardware
Allied Bolt & Screw stocks quality threaded brass wood inserts, matching machine screws, and drivers. Buy now or Contact us for help selecting the correct size and style for your project.
