At Royce Onsite Machining, we specialise in restoring damaged or stripped thread repairs in metal components such as engine blocks, machine housings, and mechanical assemblies. Our thread repair service and specialised team provides precision drilling and reaming services to prepare damaged areas for durable thread repairs — all carried out conveniently onsite or in our fully equipped workshop.
Get In Touch With Our Team Today
+44 (0) 1494 312 888
info@royceonsite.com
Our Thread Repair Service Process
Our expert team follows a proven, methodical approach that ensures every damaged thread is restored with accuracy, consistency, and long-lasting reliability. This process typically includes:
Drilling
Stage 1 – Removing damaged material:
Purpose: Removes damaged threads or enlarges the hole to the correct size for installing a thread insert.
Process: Using precision drill bits, our technicians carefully remove damaged material to create a clean, round hole while preserving the integrity of the surrounding metal.
Reaming
Stage 2 – Achieving the perfect diameter:
Purpose: Ensures the drilled hole is perfectly round, smooth, and meets the exact diameter requirements.
Process: After drilling, a reamer is used to finely refine the hole, providing an ideal surface and size for installing new thread inserts.
Thread Repair Options
Stage 3 – Installing the appropriate thread insert:
- Heli-Coil® Inserts: Widely used for restoring standard internal threads with reliable, cost-effective solutions.
- Time-Sert® or Keensert® Inserts: Heavy-duty inserts designed for high-strength applications and demanding environments.
- Custom Tap and Die Work: Precision cutting of new threads to match original specifications or specialised threading requirements.
Why Choose Royce for Thread Repairs
Businesses rely on Royce Onsite Machining for high-quality thread repair services that restore components quickly and accurately. With 50 years’ experience in the industry, our team specialises in both stripped thread repairs and damaged thread repairs, using industry leading equipment and proven techniques to achieve long-lasting results. Whether the repair is part of a breakdown or a scheduled maintenance, we focus on precision and reliability.
Benefits of Professional Thread Repair
Choosing a professional thread repair service offers several important advantages:
- Extends the life of costly components by restoring worn or damaged threads
- Returns full strength and load bearing capability after stripped thread repair
- Helps prevent further wear, misalignment, or component failure
- Onsite repairs reduce downtime
- Ensures safe, reliable operation in demanding environments
If your component also shows cracking or structural damage, we can stabilise it with our metal stitching repair service before restoring the threads. Or if the damaged threads are part of a distorted or misaligned housing, our line boring services ensure everything is accurately aligned before repair.
Frequently Asked Questions
Can stripped threads be repaired onsite?
Yes. Most stripped thread repair work can be completed onsite using portable equipment. This helps minimise downtime, especially when dealing with large or fixed machinery that cannot be easily moved.
Which thread insert is best for my application?
It depends on the material, load requirements, and operating environments. Heli-Coil® inserts are ideal for standard repairs, while Time-Sert® and Keensert® inserts are preferred for high-strength or heavy-duty applications. Our team will recommend the most suitable option.
What signs indicate a thread is becoming damaged before it fully strips out?
Early signs can include bolts not tightening correctly, reduced torque resistance, metal shavings around the bolt hole, or slight movement under load. It’s important to address these issues early on to avoid further complications.
Will the repaired thread match the original specification?
Yes. We ensure the repaired thread size, pitch, alignment, and load capability match the original design, so bolts, studs, and fittings reinstall exactly as intended.
