HELI-COIL Screw-Locking Tanged Helical Insert
The HELI-COIL Helical Insert is a tanged tang-style, screw-locking insert designed for metal applications. This plain-finish, inch-system insert features a 5/16"-24 fine thread, right-hand direction, and a tensile…
SKU 3G-OTH-529087
Also listed as: A35915EN312 · A3591 5EN312
Local availability & support — Singapore
- Local office
- 20 Woodlands Link #09-05, Singapore 738733
- Phone
- +65 8878 8355
- Payment
- Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
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Product Description
The HELI-COIL Helical Insert is a tanged tang-style, screw-locking insert designed for metal applications. This plain-finish, inch-system insert features a 5/16"-24 fine thread, right-hand direction, and a tensile strength of 200,000 psi, made from Nitronic 60 material (MPN A3591-5EN312). Supplied in a 100-piece pack, it is compatible with a 5/16"-24 STI tap size.
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 with 5/16"-24 fine thread provides strong, wear-resistant threads in applications like automotive, aerospace, and industrial machinery, preventing thread stripping and extending component life.
What are the specifications of the HELI-COIL A3591-5EN312 insert?
This HELI-COIL insert has a 5/16"-24 fine thread, right-hand direction, and a tensile strength of 200,000 psi. It is made from Nitronic 60 material, has a plain finish, and requires a 5/16"-24 STI tap. Supplied in a 100-piece pack, it is compatible with metal substrates.
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 the A3591-5EN312 screw-locking insert to your facility. Contact us for availability and lead time on this 100-pack of 5/16"-24 inserts.
How to install a HELI-COIL tanged helical insert?
To install a HELI-COIL tanged insert, drill the hole to the specified size, tap it with the correct STI tap (5/16"-24 for this insert), then use a tang-style installation tool to wind the insert into the tapped hole. After installation, break off the tang with a punch for a permanent thread repair.
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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.
