ensemble de filets rapportés AMECOIL® de taille différentes avec une bande plastique avec filets rapportés AMECOIL®
/ Presentation /

AMECOIL® Wire Thread Inserts, high-strength mechanical fasteners

For more than 45 years, AMECA has been the French specialist in the design and manufacture of Wire Thread Inserts. Used in all industrial sectors , AMECOIL® Wire Thread Inserts are recognised for ensuring reliable and durable assemblies.

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Repair or reinforce tapping with AMECOIL® Wire Thread Inserts

AMECOIL® Wire Thread Inserts are designed for two main uses:

  • Repairing worn or damaged thread

In the event of damaged or stripped or threads, AMECOIL® Wire Thread Insert allows the original thread to be restored without changing the final diameter of the screw. It is a simple, reliable and economical solution for extending the service life of parts and limiting re-tapping operations. AMECOIL® repair kits are specially designed for this.

  • Create reinforced and durable thread

In a new configuration, AMECOIL® Wire Thread Inserts make it possible to secure assemblies in critical environments: high temperatures, vibrations, corrosion, significant mechanical stresses…
They improve tensile strength, ensure even load distribution and provide a stronger thread than the original one, even in aluminium or cast iron.

Technological advantages of the AMECOIL® Wire Thread Insert

01/
Optimisation of soft materials
The AMECOIL® Wire Thread Insert, certified for the most stringent industrial requirements, allows the use of lightweight materials such as aluminium or cast iron while ensuring strong assemblies. It distributes stresses uniformly, reduces forces on the base material and minimises fatigue zones, offering thread performance equivalent to steel. Ideal for light and strong assemblies.
02/
Simplified and economical maintenance
When a thread wears out or erodes, AMECOIL® Wire Thread Inserts offer a reliable and durable solution. Their excellent wear resistance prevents erosion due to friction, even during repeated assembly and disassembly. Our commitment: to tighten and loosen your screws up to 15 times without altering the properties of the assembly.
03/
Reliability and durability
Thanks to their elasticity, AMECOIL® Wire Thread Inserts correct imperfections in the tapping and the screw, ensuring an optimal distribution of stress. This improves fatigue resistance and reduces stress. Resistant to vibration and extreme stresses, they offer threads up to 20% stronger than the original, ensuring high-performance and long-lasting assemblies.

Our range of Wire Thread Inserts

AMECOIL® SR
AMECOIL® SR
Wire Thread Insert with tang and reduced diameter notch coil.
AMECOIL® SR SCREW-LOCKING
AMECOIL® SR SCREW-LOCKING
Wire Thread Insert with integrated screw lock
AMECOIL® STRIP FEED
AMECOIL® STRIP FEED
Wire Thread Inserts packaged on a strip feed.
AMECOIL® FREE / TANGLESS®
AMECOIL® FREE / TANGLESS®
Wire Thread Insert without a tang.
AMELOCK
AMELOCK
Self-locking nut resulting from the assembly of an AMECOIL® SCREW-LOCK thread in a nut.
AMECOIL® repair kits
AMECOIL® repair kits
to effectively repair your damaged threads.

AMECOIL® Wire Thread Inserts: sizes, threads and materials available

To meet the diversity of industrial applications, AMECOIL® Wire Thread Inserts are available in a wide choice of diameters, shapes and materials.

Available sizes: from M1.6 to M100 – from 2-56 to 3½”
Threads offered: metric, UNC, UNF, BSP, BSW, BSF

Each version is designed to adapt to the specific requirements of your assembly, whether for repair, reinforcement or original production.
We also offer several technical materials and coatings to optimise compatibility with your environments (temperature, corrosion, fatigue, etc.).
To facilitate identification and traceability, a specific dying of the inserts can be managed on request.

Want to discover all available options?

All technical options (materials, dimensions, threads) are detailed in our brochure.
Download the AMECOIL® catalogue

Installation systems for Wire Thread Inserts

To ensure precise, fast and durable installation of your AMECOIL® Wire Thread Inserts, it is essential to use a suitable installation system. AMECA offers a wide range of manual, semi-automatic and automatic tools designed to meet the requirements of maintenance workshops and production lines.

Each tool is designed to optimise installation, prevent misalignment errors and ensure the performance of reinforced tapping. Discover our installation systems.

/ Our markets /

High-performance wire thread inserts for demanding industries

Aware of the specific requirements of each industrial sector, we work closely with our customers to adapt our AMECOIL® inserts to their technical, standard and environmental constraints.

Our customised approach allows us to provide reliable and compliant fastening solutions, perfectly integrated with the specific needs of each application.

Aerospace

AMECOIL® Wire Thread Inserts are used in major Aerospace programmes. They are used in engines, cabin fittings, air bleed systems, avionics systems, etc.

Defense

AMECOIL® Wire Thread Inserts are used in the manufacture of military vehicles.

Energy

The Wire Thread Inserts are used in gas and hydrogen turbines.

Nuclear

AMECOIL® Wire Thread Insert are used in vitrified waste containers and on steam generators and pressurisers for PWR.

/ FAQ /

What is the difference between an AMECOIL® Wire Thread Insert and a HELICOIL® Wire Thread Insert?

HELICOIL® is a registered trademark that is often used as a generic name for a Wire Thread Insert.
AMECOIL® is the French solution, developed and manufactured by AMECA with characteristics and functionalities similar to HELICOIL®. AMECA offers:

  • 100% French manufacturing
  • complete control of the industrial process
  • strict compliance with current standards DIN8140-1, LN9499, EN2944 NASM21209, NASM8846 etc.

products available in stock, in a wide range of sizes, shapes and materials

How to install an AMECOIL® Wire Thread Insert?

The installation of a Wire Thread Insert requires:

  1. Drilling: Drill the pilot hole using a conventional drilling tool. Do not chamfer. It is important to fit to the recommended drilling depth and diameter.
  2. Tapping: Make the hole using a special tapping tool. Check the tapping with a control gauge: This step is essential, as it ensures that the tapping has been carried out in accordance with the required tolerance.
  3. Installation: Place the AMECOIL® on the installation device. The Wire Thread Insert is installed using a suitable installation tool (manual, pneumatic or electric). The Wire Thread Insert must be located between ¼ and ½ turn below the entrance to the tapping.
  4. Breaking the tang: Break the tang using a breaker (manual or automatic). This step is only necessary if the screw shall pass through the insert.

Find illustrated installation steps.

I am unable to install my Wire Thread Inserts. What should I do?

The difficulties of mounting a Wire Thread Insert mainly come from unsuitable tools or a defect in the support (material, drilling, tapping, etc.). Several factors can prevent the correct installation of AMECOIL® Wire Thread Inserts. Here are the key points to check:

Before installation: check the following items:

  • Tapping:
    • Has it been checked using a control gauge?
    • Does the drilling diameter comply with AMECA recommendations?
  • Tools:
    • Are you using tools that are compatible with the type and size of your Wire Thread Inserts?
    • Are the tools in good condition and correctly sized?

Important recommendations for successful installation

  • Chamfering: Do not chamfer. Just break the angle. If a chamfer is necessary, it should be as small as possible to facilitate the installation without compromising the screwing of the last turn.
  • Tapping check: Before installation, use a control gauge to validate that the tapping is compliant (No Go: you must not make more than a half turn).

Pressure during installation: Do not apply pressure to the tool. This can cause a jump in the coil and compromise the installation. Turn carefully: It is the tapping that must drive the AMECOIL® Wire Thread Insert

What standards apply to Wire Thread Inserts?

The Wire Thread Inserts are subject to several international industrial standards guaranteeing their dimensions, mechanical strength and compatibility with standard threads. These standards ensure quality, repeatability and compatibility with the requirements of various sectors: Aerospace, Defense, automotive and energy.

Here is a non-exhaustive list:

STANDARD Description
DIN 8140 European standard defining the dimensions, tolerances and shapes of ISO metric Wire Thread Inserts.
NASM21209 Reference Aerospace standard defining the general characteristics of helical Threaded Inserts (dimensions, types, materials, tolerances).
NASM 8846 Aerospace standard specifying self-locking inserts
EN 2944 / EN 2946 European standards defining Threaded Inserts for Aerospace applications (with or without locks).
MA 3329 European Aerospace standard specifying helical Threaded Inserts (dimensions, materials, performance).
NAS 1130 Aerospace standard specifying metal Threaded Inserts (locked and unlocked) for harsh environments.

 

Discover the complete list of standards in our AMECOIL® catalogue

Need help?
Our team is at your disposal to advise you!
Contact us

Others products

Key-locking Inserts

CLAVSERT Key-locking Inserts
Pull-out resistant inserts for robust mechanical fastening, suitable for critical environments

AMESELF Self-tapping Inserts

AMESELF Self-tapping Insert
Robust Self-tapping Inserts for direct tapping in soft materials

Tools & Accessories

AMECA Tools & accessories
Manual, pneumatic, and electric tools for installing and maintaining inserts

Other Fasteners

Other Fasteners
Additional solutions for your specific assemblies: plastic inserts and sheet metal fasteners
Would you like to find the complete list of standards relating to Wire Thread Inserts?

All Military, Aerospace and commercial standards are listed in our catalogue.

Download the AMECOIL® Wire Thread Insert catalogue