HELI-COIL Helical Insert: Tanged Tang Style, Screw-Locking, 5/16"-18 Thread Size
The HELI-COIL Helical Insert is a tanged tang style, screw-locking insert in a plain finish, supplied in a 100-piece pack. It features a 5/16"-18 coarse, right-hand thread, is made from 18-8 material grade, and is…
SKU 3G-OTH-528917
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Product Description
The HELI-COIL Helical Insert is a tanged tang style, screw-locking insert in a plain finish, supplied in a 100-piece pack. It features a 5/16"-18 coarse, right-hand thread, is made from 18-8 material grade, and is compatible with metal substrates. The insert offers a tensile strength of 200,000 to 250,000 psi and requires an STI tap size of 5/16"-18.
Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.
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 insert provides a strong, wear-resistant 5/16"-18 coarse thread in metal substrates, ideal for automotive, aerospace, and industrial maintenance applications.
What are the specifications of the HELI-COIL A3585-5CN625 insert?
This HELI-COIL insert has a 5/16"-18 coarse, right-hand thread, made from 18-8 stainless steel with a tensile strength of 200,000 to 250,000 psi. It requires an STI tap size of 5/16"-18, comes in a plain finish, and is supplied in a 100-piece pack.
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 this 5/16"-18 screw-locking insert to your facility, ensuring you get the right part for your thread repair needs.
How to install a HELI-COIL tanged helical insert?
To install a HELI-COIL tanged insert, drill out the damaged thread to the specified size, tap the hole using the correct STI tap (5/16"-18 for this insert), then use a tang break-off tool to seat the insert flush. Always follow the manufacturer's instructions for proper torque and depth.
Used in
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.









