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 with a 5/16"-18 coarse thread, plain finish, and 18-8 material grade. It offers a tensile strength of 200,000 to 250,000 psi and is compatible…
SKU 3G-OTH-528801
Need installation or engineering help?
Ask a question
Product Description
The HELI-COIL Helical Insert is a tanged tang style, screw-locking insert with a 5/16"-18 coarse thread, plain finish, and 18-8 material grade. It offers a tensile strength of 200,000 to 250,000 psi and is compatible with metal substrates. Supplied in a 500-piece pack, this inch-system insert is designed for right-hand thread repair or reinforcement in industrial applications.
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 stripped or damaged internal threads in metal. This screw-locking, tanged tang style insert provides a strong, wear-resistant 5/16"-18 coarse thread. It is commonly used in automotive, aerospace, and industrial maintenance to restore thread integrity without replacing the parent component.
What are the specifications of the HELI-COIL 3585-5CN625S insert?
This HELI-COIL insert has a 5/16"-18 coarse thread, right-hand direction, and a tensile strength of 200,000 to 250,000 psi. It is made from 18-8 stainless steel with a plain finish, requires an STI tap size of 5/16"-18, and is compatible with metal substrates. Supplied in a 500-piece pack.
Where to buy HELI-COIL helical inserts worldwide?
3G Electric supplies HELI-COIL helical inserts worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your facility. Contact us to order the 3585-5CN625S screw-locking insert or other thread repair products for your application.
How to install a HELI-COIL screw-locking insert?
Installation requires drilling the damaged thread to the specified size, tapping with the correct STI tap (5/16"-18 for this insert), then winding the insert onto a tang-style installation tool. After insertion, break off the tang. The screw-locking feature grips the bolt to resist vibration loosening. Always follow the manufacturer's instructions.
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.
