HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, M4-0.70 Thread Size, Plain
The HELI-COIL Helical Insert is a free-running, tanged tang style insert with an M4-0.70 thread size, right-hand orientation, and coarse thread pitch. Made from 18-8 stainless steel (metal), it has a tensile strength…
SKU 3G-OTH-599086
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Product Description
The HELI-COIL Helical Insert is a free-running, tanged tang style insert with an M4-0.70 thread size, right-hand orientation, and coarse thread pitch. Made from 18-8 stainless steel (metal), it has a tensile strength of 200,000 to 250,000 psi and a 4.2mm drill size. Supplied in a plain finish, this 1,000-piece pack (MPN 1084-4CN040S) is designed for metric applications requiring reliable thread repair or reinforcement.
Frequently Asked Questions
What is a HELI-COIL helical insert used for?
A HELI-COIL helical insert is used to repair or reinforce internal threads in metal components. It provides a durable, free-running thread in applications like automotive, aerospace, and industrial machinery, restoring strength to stripped or worn threads without replacing the entire part.
What are the specifications of the HELI-COIL M4-0.70 insert?
This HELI-COIL insert has an M4-0.70 thread size, right-hand orientation, and coarse pitch. It is made from 18-8 stainless steel with a tensile strength of 200,000 to 250,000 psi, requires a 4.2mm drill size, and comes in a plain finish. Supplied in a 1,000-piece pack (MPN 1084-4CN040S).
Where to buy HELI-COIL helical inserts worldwide?
3G Electric supplies HELI-COIL helical inserts worldwide, handling full logistics and customs clearance for global delivery. As a sourcing partner, we provide genuine HELI-COIL products like the M4-0.70 tanged insert, ensuring you get the correct thread repair solution for your application.
How to install a HELI-COIL tanged helical insert?
To install a HELI-COIL tanged insert, drill to the specified size (4.2mm for M4-0.70), tap the hole with the correct HELI-COIL tap, then use a tang-break tool to insert the coil. After installation, break off the tang at the notch. Follow standard thread repair practices for best results.
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3G Electric supplies HELI-COIL free-running tanged helical inserts. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.









