Hex Drive Threaded Inserts for Softwood – Fast, Strong & Easy
Hex drive threaded inserts are machine-threaded anchors designed for softwoods such as pine, cedar, MDF, particle board, and plywood. Driven with a standard Allen/hex key or hex bit, they cut their way into the wood and leave durable internal machine threads for bolts or studs. We carry both inch and metric sizes (inch & metric) in flush and flanged styles to match your project and hardware.
Why Choose Hex Drive Inserts for Wood?
- Made for softwoods: Deep external threads bite into softer materials without splitting when installed correctly.
- Tool-friendly: Install with a hex key/driver—no special press tools required.
- Reusable connection: Provides strong machine threads for repeated assembly/disassembly.
- Clean finish: Flush or flanged heads suit visible furniture joints and fixtures.
- Corrosion resistance: Zinc-alloy and yellow-zinc finishes help in indoor, shop, and cabinetry environments.
Common Applications
- Cabinetry, knock-down furniture, and shelving
- Speaker boxes, fixtures, and mounts
- Jigs, shop fixtures, and repeatable setups
- Repairing stripped wood screw holes with machine-thread hardware
Flush vs. Flanged Styles
- Flush (headless): Sits below the surface for a hidden look; ideal where a plug or cap will cover the hole.
- Flanged: Built-in washer spreads load and resists pull-through in softer panels.
Selection & Sizing Tips (inch & metric)
- Match the internal thread: Choose the machine-screw size you’ll use (e.g., 1/4-20, M6).
- Check panel thickness: Pick an overall length that stays within the material while leaving full thread engagement.
- Pilot hole size: Follow each insert’s spec; softwoods typically need a smaller pilot to prevent spin-out.
- Edge distance: Keep at least 2× insert OD from edges and ends to reduce splitting.
How to Install Hex Drive Inserts in Softwood
- Drill the pilot: Use the manufacturer’s pilot diameter; drill straight and to depth.
- Chamfer lightly: A small countersink reduces raised fibers and helps the flange seat (if used).
- Drive slowly: Use a hex key or low-speed driver; keep the insert vertical to avoid wandering.
- Stop flush: For flush styles, set just below the surface; for flanged, seat the flange firmly—do not over-torque.
- Fasten: Use the matching machine screw/bolt with a flat or washer as needed.
Need help sizing or bulk pricing? Contact our team or Ask Bob for quick recommendations. For large projects, you can also request a quote.
FAQs
What size pilot hole should I drill for hex drive inserts?
Use the pilot size listed on each product page. In softwood, a slightly smaller pilot often gives better bite; in harder plywood/MDF, use the exact spec to prevent splitting or over-tightening.
Should I choose flush or flanged hex inserts?
Pick flush for a hidden, below-surface finish, or flanged to spread load and resist pull-through in softer panels or thin stock.
Can I install these with a power driver?
Yes—use a hex bit at low speed and steady pressure. Stop as soon as the insert seats to avoid stripping the wood.
What fasteners do hex drive inserts accept?
They provide machine-thread connections (e.g., 10-24, 1/4-20, M6). Match your insert’s internal thread (inch or metric) to the screw or bolt you plan to use.
How can I prevent the insert from spinning out?
Drill the correct pilot, drive straight, and don’t over-torque. For end-grain or very soft stock, consider a flanged style or add wood glue in the threads for extra grip (avoid glue in the internal threads).
Do you offer both inch and metric sizes?
Yes—our selection includes popular inch and metric options (inch & metric) so you can match existing hardware or regional standards.