What Are Thread Insert Installation Tools?
Thread insert installation tools are purpose-built drivers and pullers used to install two families of fasteners: threaded inserts (driven or screwed into a pre-drilled hole to create reusable machine threads) and rivet nuts (blind nuts that collapse from one side of sheet material). Using the correct tool keeps the insert square, prevents damage, and delivers repeatable, high-strength results.
Which Installation Tool Do I Need?
E-Z Lok® Threaded Insert Drivers
- Hex Insert Drivers: Engage the internal hex of E-Z Lok style inserts to drive them straight and flush in wood, plastics, and softer metals.
- Drive Tool Adapters: Use with a T-handle, ratchet, or low-speed power driver for consistent depth and alignment.
- Choose these for: Standard threaded inserts (flush or flanged) where you need reusable machine threads in wood or cast materials.
Rivet Nut (Blind Nut) Tools
- Hand Lever Tools: Compact, budget-friendly option for light duty and field work.
- Ratchet Tools: Two-hand ratcheting increases pull force with less effort—great for frequent installs and mild steel.
- Spin-Pull / Pneumatic: Best speed and repeatability for production; precise compression and stroke control.
- Choose these for: Blind applications in sheet metal, tubing, or extrusions where you can access only one side.
Selection & Setup Tips
- Match size and thread: Use the driver/mandrel that matches your insert or rivet nut (e.g., 10-24, 1/4-20, M5, M6).
- Drill the right hole: Follow the product’s hole chart and grip range.
- Control speed & torque: For power tools, run at low RPM to avoid heat and cross-threading.
- Set stroke on rivet nut tools: Pull length should fully collapse the body without crushing the parent material.
- Keep it square: Start straight and apply light, steady pressure for clean seating.
Common Applications
- Fabrication & Sheet Metal: Panels, brackets, and serviceable covers.
- Automotive & Motorsports: Bodywork and accessory mounting to thin sections.
- Furniture & Woodworking: Knock-down joints using brass or steel inserts.
- Electronics & Appliances: Blind mounting in aluminum or plastic housings.
Thread Insert Installation Tools FAQ
What’s the difference between a threaded insert and a rivet nut?
Threaded inserts are driven or screwed into a pre-drilled hole to create reusable machine threads in wood, plastic, or softer metals. Rivet nuts are blind fasteners that collapse from one side of sheet material using a pull tool to form a backside flange.
Which driver fits my E-Z Lok insert?
Match the insert’s internal drive (commonly hex) and size. Use the listed E-Z Lok driver or adapter for that size to ensure positive engagement and straight seating.
How do I set up a rivet nut tool correctly?
Install the correct mandrel/nosepiece for your thread size, set the stroke within the rivet nut’s grip range, then test on scrap. The body should collapse fully and clamp the material without over-crushing.
Hand, ratchet, or spin-pull—what should I choose?
Hand tools for light use/soft materials; ratchet tools for frequent installs and mild steel; spin-pull/pneumatic for production speed and repeatability.
Can I drive threaded inserts with a standard hex key?
Yes, but a dedicated driver improves alignment and depth control, reducing cross-threading or surface damage—especially in hardwoods or brittle plastics.
What hole size should I drill?
Use the manufacturer’s chart for the exact insert or rivet nut. Inserts use a hole near the minor OD of the external threads; rivet nuts need a hole that accepts the body without excessive play.
Why is my rivet nut spinning after installation?
Common causes: underset stroke (not fully collapsed), oversized hole, or installing outside the grip range. Reset stroke, verify hole size, and confirm the fastener’s grip for the material thickness.
How do I avoid damaging wood when installing inserts?
Pre-drill the recommended pilot, drive at low speed, keep the tool square, and stop when flush. In softer or end-grain material, consider flanged inserts or a dab of wood-safe epoxy kept out of internal threads.