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 500-piece pack. It features a 5/16"-18 coarse right-hand thread, is made from 18-8 material grade, and offers…
SKU 3G-OTH-528960
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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 500-piece pack. It features a 5/16"-18 coarse right-hand thread, is made from 18-8 material grade, and offers a tensile strength of 200,000 to 250,000 psi. Compatible with metal substrates, this inch-system insert uses a 5/16"-18 STI tap size and is manufactured under part number 3585-5CN469S.
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 helical insert used for?
A HELI-COIL screw-locking helical insert repairs or reinforces threads in metal, providing a stainless steel 18-8 thread that resists loosening under vibration. It is commonly used in automotive, aerospace, and industrial maintenance to restore damaged 5/16"-18 coarse threads with tensile strength up to 250,000 psi.
What are the specifications of the HELI-COIL 3585-5CN469S insert?
This HELI-COIL insert has a 5/16"-18 coarse right-hand thread, screw-locking tang style, plain finish, and is made from 18-8 stainless steel. It requires a 5/16"-18 STI tap, offers tensile strength of 200,000 to 250,000 psi, and comes in a 500-piece pack. Compatible with metal substrates.
Where to buy HELI-COIL helical inserts in 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 3585-5CN469S inserts in 500-piece packs. Contact us for availability and lead time to your location.
How to install a HELI-COIL tanged screw-locking insert?
To install, drill out the damaged thread to the specified size, tap with the correct STI tap (5/16"-18 for this insert), then use a tang-style installation tool to wind the insert into the tapped hole. After installation, break off the tang. Ensure the substrate is clean and lubricated for best results.
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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.









