HELICOIL® thread inserts have been proven in practice. For over 65 years. They are available in Free Running and Screwlock versions. The green or red colour simplifies identification even when installed.
HELICOIL® thread inserts create high-strength, wear-resistant, heat-resistant threads of highest precision by transferring the force from flank to flank into the pilot thread. The reduced diameter of the HELICOIL® Plus in the first thread ensures that the thread insert can be screwed in like a screw.
The HELICOIL® is used in mechanical engineering and in the electronics, automotive and aerospace industries. HELICOIL® is also applied in gear housings, exhaust systems, engines and satellites, thread reinforcement, repeated installations, maintenance and repair as well as in lights, electrical appliances, hammer drills and printing presses.
HELICOIL® Plus thread inserts comply with a variety of requirements and industry standards, including those in the aerospace industry, and feature other approvals as well as suitability tests, e.g. in the field of power plant technology.
There are many good reasons for using our products.
Strength and options.
Point by point.
True quality appears under extreme conditions. Even when exposed to high temperatures and humidity, HELICOIL® thread inserts remain stable and reliable. Depending on the application, the thread inserts are made of different materials.
Long-lasting. The high surface quality of the rolled thread made of austenitic chrome-nickel steel ensures a high-strength, wear-resistant thread with a constant, extremely low thread friction torque.
Uniform along the entire length of the screw. The elastic properties of the HELICOIL® thread insert allow uniform load and stress distribution.
No self-loosening. The thread technology and polygonal twist of the HELICOIL® Screwlock result in a high degree of frictional connection and therefore in a screw lock. Additional locking of the joint using split pins, wires or washers is not necessary.
Less friction, more precision. For a torque-controlled screw tightening application, the screw pre-load force can be adjusted more precisely and the yield point of the screw utilised more efficiently.
Perfect for lightweight construction. HELICOIL® combines minimum space requirements and high strength. Thus, high-strength screws are also perfect for use in materials with low shear strength.
Wire with rhombic profile is formed into elastic spirals – the “Plus” refers to the special thread start compared to the HELICOIL® Classic. Simply place it and screw it in like a screw using an installation mandrel with similar dimensions to those of a tap. Existing tools from the previous model can still be used. Due to the considerably expanded range of tools to be used, installation times are reduced by up to 20 % compared to previous methods.
Installed quickly and securely – and no tang to break. The innovative coil of the insert allows installation from both ends with identical quality. Thanks to the reduced thread on both ends and the coil ends optimised for insertion, the HELICOIL® Tangfree thread insert can be installed without special alignment.
The HELICOIL® Tangfree is easily screwed onto the mandrel and goes into the pilot thread smoothly. The spring-mounted installation blade grips into the notch of the coil thread insert and securely installs it in the prepared pilot thread.
In addition, the optimised geometry minimises wear on the tools. The tool concept is impressive, boasting long service life for the blades and simple maintenance.
Find out more: related downloads.
If you would like to know more, simply download the relevant brochures.
| Title | Language | Version | File | Download | |||
|---|---|---|---|---|---|---|---|
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HELICOIL® Metric thread inserts for metals
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English | 0100/16.02 | 2969 kb / PDF | ||||
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HELICOIL® Imperial thread inserts for metals
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English | 0101/15.02 | 3494 kb / PDF | ||||
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HELICOIL® Smart The new generation of thread technology for high-strength joints
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English | 10/2019 | 2870 kb / PDF | ||||
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HELICOIL® Tangfree The tangfree coil thread insert for high-strength threads
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English | 03/2019 | 2618 kb / PDF | ||||
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HELICOIL® with Primer‑Free® 2 The well-established thread technology with new surface coating
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English | 03/2020 | 178 kb / PDF | ||||
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HELICOIL® Kits Repair solutions for damaged threads
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English | 02/18 | 994 kb / PDF | ||||
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The Blue Book Aerospace Buyer’s Directory To HELICOIL® Wire Thread Inserts
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English | 0130/16.02 | 522 kb / PDF | ||||
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Success story EUROPIPE advances into new dimensions with HELICOIL®!
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English | 0316/15.02 | 353 kb / PDF | ||||
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Success story KSB and HELICOIL®: An energetic cooperation!
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English | 0317/15.02 | 344 kb / PDF | ||||
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Success story WE-EF and Böllhoff light up Bielefeld
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English | 0318/15.02 | 333 kb / PDF |
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