As a first step, the defective thread must be drilled out (video: Drilling open a defective thread).
Now, the new holding thread is cut using a HELICOIL® plus tap drill (video: Cutting the new HELICOIL® thread).
Thread repair is worth it with HELICOIL® plus
HELICOIL® plus repair range kits allow easy installation of a new thread in only a few steps.
Characteristics
Too high screw-tightening torque, corrosion or wear - these and other factors cause thread destruction.
HELICOIL® plus thread inserts have been developed in many different designs to repair destroyed threads within a short time. The green colour allows easier identification when they are installed.
Benefits:
- Easy and fast installation
- Corrosion and temperature-resistant
- High-strength and wear-free
Technology
The new thread is only a few steps away
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The HELICOIL® plus is assembled with the provided installation mandrel (video: Installation of the HELICOIL® plus thread).
Now, only the tang is broken with the tang break mandrel (video: Breaking the tang) and the new HELICOIL® plus thread insert can be inserted.
Product types
Repair kits and range kits
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HELICOIL® plus repair kits
Metric HELICOIL® plus repair kits
- M 2 - M 16 x 1.5
- M 18 - M 36 x 1.5
Imperial thread HELICOIL® plus repair kits- UNC 2-56 to UNC 1 1/2" -6
- UNF 4-48 to UNF 1"-12
- BSW 3/16" - 24 to BSW 1 1/2" -6
- BSF 1/4" - 26 to BSF 1"- 10 G 1/8" - 28 to G 1"- 11
Special repair kits
Repair kits in various dimensions for- Oil drain threads
- Spark plug threads
- Lambda probe threads
- Wheel bearing threads
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HELICOIL® plus repair range kits
Metric HELICOIL® plus repair range kits
- M 2,5 - M 6
- M 4 - M10
- M5 - M 12
- M6 - M 14 x 1.25
Imperial thread HELICOIL® plus repair range kits- UNC (UNC 5-40 to UNC 12-24 and UNC 1/4"-20 to UNC 1/2" -13)
- UNF (UNF4-48 to UNF 1/4"-28 and UNF 1/4"-28 to UNF 1/2" -20)
- BSW (BSW 1/4" -20 to BSW 1/2" -12)
Special repair range kits
Repair range kits in various dimensions for- Oil drain threads
- Spark plug threads
Our HELICOIL® plus thread inserts are also available in refill bags.
Further information and technical indications on our repair kits and repair range kits are provided in our HELICOIL® catalogue for thread repair!
Applications
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Repair of spark plug threads
In the automotive industry, the HELICOIL® plus technology is a recognised method for creating high-strength threads.
Expensive components do not have to be replaced anymore, but can be repaired easily and cost-effectively. -
Thread repair in an aluminium motor
Heavily stressed and often used threads in an aluminium motor are preventively equipped with HELICOIL® plus.
This is an important requirement, e. g. in motorsports. -
Thread repair in the industry
Fields of application are for example mechanical and plant engineering, power station technology and shipbuilding.
Repair of HELICOIL® plus thread inserts is a method which is eligible for certification and which is recognised, among others, by the following companies and institutions.- TÜV
- Germanischer Lloyd
- DET Norske Veritas
In nuclear technology, individual acceptances are executed.
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