Thread Inserts

Thread for sewing and crafting projects.

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Introduction

Thread inserts, often called helicoils, reinforce or repair threaded holes in metal, plastic, and wood, providing strong, reusable grip for screws and bolts.

  • Available in kits that include installation tools and coils sized for common fasteners.
  • Materials range from stainless steel for corrosion resistance to brass for softer substrates.
  • Ideal for engine parts, furniture assembly, and electronics housings where original threads strip.

Find thread inserts and installation kits for durable repairs.

FAQs

Kits typically cover metric and standard sizes from M2 to M12 or #4-40 to 1/2 inch, matching most household and automotive fasteners.

Yes, installation usually requires a tap, insertion tool, and tang break-off tool, often included in the same kit.

They can be drilled out if needed, allowing the hole to accept a new insert of the same size.

Once installed, the coil itself is permanent, but the fastener can be removed and reinstalled many times without damaging the insert.

Aluminum, magnesium, and many plastics benefit most because their native threads wear quickly under repeated use.