HELI-COIL Helical Insert: Tanged Tang Style, Screw-Locking, 5/16"-18 Thread Size
3G Electric supplies the HELI-COIL Helical Insert: Tanged Tang Style, a screw-locking tanged helical insert with a 5/16"-18 coarse thread size, 500 PK, and a tensile strength of 200,000 to 250,000 psi. Made from 18-8…
SKU 3G-OTH-528799
Need installation or engineering help?
Ask a question
Product Description
3G Electric supplies the HELI-COIL Helical Insert: Tanged Tang Style, a screw-locking tanged helical insert with a 5/16"-18 coarse thread size, 500 PK, and a tensile strength of 200,000 to 250,000 psi. Made from 18-8 material with a dry film lubricant finish, this inch-system insert is compatible with metal and uses a right-hand thread direction. As a global industrial solutions provider, we interpret demand and deliver genuine parts across 14 departments, with specialist depth in combustion, pumps, and controls.
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 screw-locking tanged helical insert used for?
A HELI-COIL screw-locking tanged helical insert repairs or reinforces tapped threads in metal, providing a strong, wear-resistant thread. The screw-locking feature resists vibration loosening. 3G Electric supplies this 5/16"-18 coarse thread insert, made from 18-8 stainless steel with 200,000 to 250,000 psi tensile strength, for industrial maintenance and production applications.
What are the specifications of the HELI-COIL 3585-5CNW312S insert?
The HELI-COIL 3585-5CNW312S is a tanged tang style, screw-locking helical insert with a 5/16"-18 coarse thread size, right-hand direction, and 18-8 material grade. It has a tensile strength of 200,000 to 250,000 psi, a dry film lubricant finish, and comes in a 500 PK. The STI tap size is 5/16"-18, and it is compatible with metal substrates.
Where to buy HELI-COIL helical inserts in worldwide?
3G Electric supplies HELI-COIL helical inserts worldwide, including the 3585-5CNW312S screw-locking tanged style. As a global industrial solutions provider, we handle full logistics and customs clearance to deliver genuine parts to your facility. Contact us for availability and lead time on this 5/16"-18 coarse thread insert in 500 PK quantities.
How to install a HELI-COIL tanged helical insert?
To install a HELI-COIL tanged helical insert, drill the hole to the specified STI tap size (5/16"-18 for this insert), tap the hole with the corresponding STI tap, then use a tang installation tool to wind the insert into the threaded hole. After installation, break off the tang with a punch. 3G Electric supplies the insert and can advise on tooling.
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.









