What is the difference between tangless V-COIL notch inserts and traditional tang inserts?

Traditional wire thread inserts use a tang for installation that must be broken off and removed after installation. V-COIL notch replaces this tang with driver notches at both ends of the insert. The dedicated installation tool engages into these notches, so there is no loose tang that can become a foreign object.

Are V-COIL notch inserts suitable for automatic installation?

V-COIL notch was developed with automation in mind. Tangless inserts with driver notches and a 1/4 inch hex drive on the tool support automatic or semi-automatic assembly processes and help to reduce cycle times.

In which applications is tangless technology particularly recommended?

Tangless technology is particularly recommended wherever loose metal parts must be strictly avoided: electronics and electrical equipment, medical devices, automotive and aerospace applications, gearboxes, bearings as well as fluid and gas systems such as pipelines and filter housings.

Are V-COIL notch inserts compatible with the existing V-COIL system?

Yes. V-COIL notch is the tangless extension of the established V-COIL system. The inserts provide the same high-strength, wear-resistant internal threads as standard V-COIL inserts and complement the existing product family for repair, reinforcement and new manufacture of threads.

V-COIL notch – Tangless Thread Insert Technology | VÖLKEL

V-COIL notch – Tangless Thread Insert Technology

More safety, more speed and more flexibility for professional thread reinforcement and repair.

V-COIL notch is the innovative tangless thread insert system from VÖLKEL. Driver notches at both ends of the insert replace the tang and enable controlled, orientation-free installation – by hand or automation.

Open Catalogues & Manuals Watch Intro Video

V-COIL notch tangless thread insert system

Why V-COIL notch?

Tangless thread inserts for demanding applications – from electronics and machinery to automotive and aerospace.

Tangless Design

No breaking and removing of tangs. Driver notches at both ends of the insert eliminate loose tangs and the risk of foreign object damage.

Higher Installation Speed

Orientation-free screwing-in, no tang breaking, no searching and counting tangs – ideal for series production and automatic installation.

Safe & Clean

Especially beneficial in sensitive environments like electronics, medical devices, gears or fluid systems where loose metal parts are critical.

Durable Stainless Steel

Made of austenitic stainless precision profile wire, V-COIL notch inserts provide strong, temperature- and corrosion-resistant internal threads.

Repositionable & Removable

The inserts can be adjusted or removed again in the installation direction with the V-COIL notch tool, without damaging the application.

Part of the V-COIL System

Perfect addition to the proven V-COIL thread insert family – for repair, reinforcement and new manufacture of high-strength threads.

What is V-COIL notch?

The tangless evolution of the V-COIL thread insert technology.

Traditionally, wire thread inserts are equipped with a tang which is required for installation and then has to be broken off and removed after the insert is in place.

With V-COIL notch, this tang is no longer needed. Instead, the inserts have small driver notches on the inside of both ends. The specially developed V-COIL notch installation tool engages in these notches, holds the insert securely and screws it into the receiving thread.

After installation, there is no tang to break off, no loose metal piece to find and remove, and no risk that a forgotten tang remains in the component.

Key advantages at a glance

Installation speed: No time-consuming orientation of the insert, no tang breaking, no vacuuming or counting tangs.
Flexibility: Insert position can be corrected; inserts can be removed again in the installation direction using the tool.
Safety: No loose tangs that can cause short circuits, block gears, damage bearings or clog pipelines and filters.
Performance: High-strength, wear-resistant internal threads with excellent temperature and corrosion resistance.

V-COIL notch Documents

Open our multilingual catalogues, user manuals and “What is V-COIL notch?” flyers in a new window – and download them if needed.

Catalogues

V-COIL notch product overview, dimensions and technical data.

Ideal for purchasing, engineering and technical documentation.

User Manuals

Step-by-step instructions for installation and use of V-COIL notch.

For production, maintenance, quality and training.

“What is V-COIL notch?” Flyers

Short, visual explanation of the tangless concept – available in many languages.

Perfect for quick introduction of customers and colleagues.

Video 01

V-COIL notch – System Overview

Get a compact overview of the V-COIL notch concept: tangless inserts with driver notches at both ends, the dedicated installation tool and the main benefits for your production.

Ideal as an introduction for technicians, engineers and sales teams who are new to tangless thread inserts.

Video 02

Unboxing the V-COIL notch Set

Take a look inside the V-COIL notch assortment: contents of the kit, inserts, tools and how everything is organised for day-to-day workshop or production use.

Perfect for users who want to see what they actually receive before ordering or introducing the system.

Video 03

How to Install V-COIL notch

Step-by-step demonstration of how to install V-COIL notch inserts: prepare the hole, cut the receiving thread, set the depth on the installation tool and screw in the insert.

Ideal as a visual complement to the user manual and training material for new operators.

Video 04

V-COIL notch Installation Tool in Detail

This video focuses on the dedicated V-COIL notch installation tool with its spring-loaded blade that engages into the driver notch and holds the insert securely during installation.

See how depth stop, 1/4" hex drive and the tangless concept work together for fast and repeatable results – also suitable for automatic installation.

Video 05

V-COIL notch vs. Traditional Tang Inserts

Direct comparison between conventional tang inserts and the tangless V-COIL notch solution: installation steps, process time, handling and safety.

Use this video to convince stakeholders why switching to tangless technology reduces risk and increases productivity.

Technical & Economic Benefits

Designed for critical applications where threads must be safe, strong and reliable – without compromise.

Strong Internal Threads

The spring-like wire insert made of stainless steel creates a high-strength internal thread that often exceeds the load capacity of the parent material.

Temperature & Corrosion Resistance

V-COIL notch inserts are suitable for components in harsh environments and temperature-loaded applications.

Reduced Foreign Object Damage

No broken tangs in electrical equipment, gears, bearings or fluid lines – a crucial advantage in aviation, automotive and high-value machinery.

Process Reliability

Defined depth setting, orientation-free installation and the option to remove the insert in the installation direction increase process control and reduce scrap.

Automation Friendly

Tangless inserts with driver notches and a 1/4" hex drive on the tool are ideal for automatic or semi-automatic assembly solutions.

Full System from One Source

Inserts, tools, catalogues, manuals and video support from VÖLKEL – for global use and training in multiple languages.

Typical Applications

Everywhere tangs are a risk and high-strength threads are essential.

Electronics & Electrical Engineering

Housings, printed circuit boards, terminal blocks and components where loose metal parts could cause short circuits.

Automotive & Mobility

Engine components, gearboxes, chassis parts and assemblies that require reliable threads and clean processes.

Aerospace & High-Value Machinery

Applications where foreign object damage must be strictly avoided and every component must be traceable and safe.

Fluid & Gas Systems

Pipelines, valve blocks and filter housings where tangs could block flow or damage sensitive components.

Maintenance & Repair

Professional thread repair and reinforcement in workshops, service departments and industrial maintenance.

Frequently Asked Questions

Everything important about using V-COIL notch tangless inserts in production, maintenance and automated assembly.

1. What makes V-COIL notch different from traditional tang inserts?

V-COIL notch uses driver notches instead of a break-off tang. This means no tang breaking, no tang removal and no risk of loose metal pieces (FOD). Installation becomes cleaner, faster and safer — especially in sensitive environments.

2. Can V-COIL notch inserts be removed or repositioned?

Yes. Unlike tang inserts, V-COIL notch allows in the installation direction using the same installation tool. This prevents damage to the parent part and supports rework processes.

3. Is V-COIL notch suitable for automatic installation?

Absolutely. Thanks to the orientation-free insertion (notches at both ends) and the tool’s 1/4'' hex drive, V-COIL notch is ideal for automatic and semi-automatic installation systems. It reduces cycle time and increases process reliability.

4. Where is tangless technology especially recommended?

Wherever a loose tang would create safety or quality risks:

Electronics & PCB assemblies
Gearboxes, bearings and moving parts
Fluid & gas systems, valves, filter housings
Aerospace & high-value machinery (FOD-critical areas)

With V-COIL notch, no tang can break off — eliminating this risk entirely.

5. Are V-COIL notch inserts compatible with standard V-COIL tools and taps?

Yes. The receiving thread is identical to the standard V-COIL system. Only the installation tool is specific for notch inserts because it engages in the driver notches instead of a tang.

6. What material are V-COIL notch inserts made of?

They are manufactured from austenitic stainless precision profile wire. This ensures excellent corrosion resistance, temperature resistance and a long-lasting high-strength internal thread.