HELI-COIL Helical Insert: Tanged Tang Style, Screw-Locking, M3-0.50 Thread Size
The HELI-COIL Helical Insert is a tanged tang style, screw-locking insert with M3-0.50 thread size, coarse thread type, and right-hand direction. It is made from 18-8 material with a dry film lubricant finish…
SKU 3G-OTH-528888
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Product Description
The HELI-COIL Helical Insert is a tanged tang style, screw-locking insert with M3-0.50 thread size, coarse thread type, and right-hand direction. It is made from 18-8 material with a dry film lubricant finish, offering a tensile strength of 200,000 to 250,000 psi. Supplied in a 1,000 PK, this metric insert is compatible with metal and requires an STI tap size of M3-0.50.
Frequently Asked Questions
What is a HELI-COIL helical insert used for?
A HELI-COIL helical insert repairs or reinforces threads in metal. This screw-locking, tanged tang style M3-0.50 insert provides strong, wear-resistant threads in aluminum, cast iron, or steel components. It is ideal for automotive, aerospace, and industrial maintenance applications where stripped threads need a durable, permanent fix.
What are the specifications of the HELI-COIL 4184-3CNW030S insert?
This HELI-COIL insert has an M3-0.50 thread size, coarse thread type, and right-hand direction. It is made from 18-8 stainless steel with a dry film lubricant finish, offering a tensile strength of 200,000 to 250,000 psi. It requires an STI tap size of M3-0.50 and comes in a 1,000 PK.
Where to buy HELI-COIL helical inserts in worldwide?
3G Electric supplies HELI-COIL helical inserts worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to deliver these M3-0.50 screw-locking inserts to your facility. Contact us for availability and lead time on the 4184-3CNW030S or other HELI-COIL part numbers.
How to install a HELI-COIL tanged tang insert?
To install a HELI-COIL tanged tang insert, drill out the damaged thread to the specified size, then tap the hole using the correct STI tap (M3-0.50 for this insert). Wind the insert onto the installation tool and screw it into the tapped hole until it is below the surface. Break off the tang with a punch.
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Common applications for HELI-COILHELI-COIL Products
3G Electric supplies HELI-COIL screw-locking tanged helical inserts. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.









