Can Epoxy Glue Fill Completely Stripped Threads?

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Stripped threads on metal or plastic components can spell trouble but, with the right epoxy glue, you can restore their function at home. Here’s what to consider when using epoxy to fill and rebuild threads for a strong, lasting hold.

How Epoxy Glue Restores Stripped Threads

Epoxy glue can fill the void left by stripped threads, effectively recreating the thread form when used with a suitable former, such as an original bolt. After mixing the two components, apply the epoxy into the stripped hole. Next, insert a release-agent-coated bolt or screw of the correct size. As the adhesive cures, it moulds to the shape of the threads, producing a serviceable repair. Once fully cured, unscrew the bolt: the epoxy will retain the new thread profile.

Thoroughly degrease and clean the damaged area before applying epoxy.
Use a release agent (such as light oil or petroleum jelly) on the bolt to prevent it bonding permanently.
Wait for the epoxy to cure fully before removing the former.

Choosing the Right Epoxy for Thread Repairs

Not all epoxy adhesives offer the same performance for threaded repairs. Fast-curing, high-strength two-component epoxies like Klebfix are ideal, setting in just five minutes and bonding a variety of substrates including metal and plastic. Products with a 1:1 mixing ratio and drip-free application help ensure accuracy in confined spaces. For larger repairs or custom requirements, alternatives like “FixExpress” offer equally robust results, while fibreglass resin kits are suitable where structural reinforcement is required.

When This Matters Most

Filling stripped threads with epoxy is particularly useful when replacement parts are unavailable or expensive, and where the repair won’t regularly face extreme vibration or repeated removal. It is a practical option for non-critical structural repairs, prototypes, or restoring threads in metal and plastic housings.

Related guides

How To Fix A Thread With Resin

Repairing stripped threads with epoxy enables durable solutions for many DIY and professional tasks. For a full guide to resin thread repairs and to choose the right adhesive, explore our advice at how to fix a thread with resin.