BIG-SERT® Thread Repair Kit – M5 x 0.8 (Oversize Repair Set)

BIG-SERT® Thread Repair Kit – M5 x 0.8 (Oversize Repair Set)

The BIG-SERT M5 x 0.8 thread repair kit is a heavy-duty oversize solution designed for damaged, stripped, or previously failed threads. Ideal for mechanics, engineers, and workshops, this kit restores M5 threads where standard inserts are no longer effective, providing a stronger and more permanent repair. For more thread repair solutions, explore our TIME-SERT thread repair range.

 

When Do You Need a BIG-SERT Kit?

• Thread repair has already failed with standard inserts
• Threads are severely stripped or oversized
• Previous Helicoil or insert repair has pulled out
• High-load applications requiring a stronger, permanent repair

 

Why Choose BIG-SERT?

In situations where standard repairs fail, BIG-SERT is specifically engineered to provide a stronger, more reliable solution. Designed as an oversize system, it provides increased strength and durability, making it the ideal solution for critical repairs where reliability is essential.

• Oversize repair system – Designed for failed or enlarged threads
• High-strength fix – Suitable for load-bearing and critical applications
• Permanent repair – Creates a long-lasting, secure thread
• Professional kit – Ideal for workshop and engineering use

 

Key Features

• BIG-SERT solid bushing insert – Provides superior strength compared to coil-type repairs
• Complete repair kit – Includes all tools required for installation
• Precision thread restoration – Ensures accurate alignment and fit
• Heavy-duty steel inserts – Designed for durability and long service life
• M5 x 0.8 compatibility – Ideal for common metric repair applications

 

BIG-SERT vs Standard Thread Repair

Standard thread repair kits are designed for first-time repairs. BIG-SERT is used when those repairs fail or when threads are too damaged to restore using conventional inserts.

• BIG-SERT – Oversize solution for failed or damaged threads
• Standard Kits – Suitable for initial repairs
• BIG-SERT Advantage – Larger, stronger, permanent repair solution

 

Application and Instructions

1. Drill out the damaged thread using the correct drill size
2. Countersink the hole to prepare for insert installation
3. Tap a new oversized thread using the supplied tap
4. Install the BIG-SERT insert using the driver tool
5. Secure the insert to create a permanent, high-strength repair

This BIG-SERT M5 x 0.8 thread repair kit is ideal for automotive, engineering, and workshop environments where standard thread repair has failed.

If your thread has not previously been repaired, a standard solution may be more suitable. View our TIME-SERT M5 x 0.8 thread repair kit for first-time thread repairs.

 

Installation Guidance

BIG-SERT installation follows a similar process to standard thread repair systems. For a general overview of the repair process, watch the video below.

Please note: This video is for guidance only and demonstrates a standard thread repair process.

 

Contents

 

Technical Specifications

 

In stock and ready for dispatch from the UK.

Explore our TIME-SERT thread repair range for more repair kits, inserts, and accessories.