HELI-COIL Screw-Locking Tanged Helical Insert, 5/16"-24, Plain, 100 PK
The HELI-COIL Helical Insert is a tanged tang style, screw-locking insert with a 5/16"-24 fine 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-528846
Also listed as: A35915CN312 · A3591 5CN312
Local availability & support
- Delivery
- Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
- Payment
- Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.
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Product Description
The HELI-COIL Helical Insert is a tanged tang style, screw-locking insert with a 5/16"-24 fine 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 100-piece pack, this inch-system insert uses a right-hand thread direction and requires an STI tap size of 5/16"-24.
Frequently Asked Questions
What is a HELI-COIL helical insert used for?
A HELI-COIL helical insert repairs or reinforces threads in metal substrates. This screw-locking, tanged tang style insert with 5/16"-24 fine thread provides strong, wear-resistant threads in aluminum, cast iron, or steel, preventing thread stripping and extending component life.
What are the specifications of the HELI-COIL A3591-5CN312 insert?
This HELI-COIL insert has a 5/16"-24 fine thread, 18-8 material grade, and tensile strength of 200,000 to 250,000 psi. It is plain finish, right-hand thread, inch-system, and requires an STI tap size of 5/16"-24. Supplied in a 100-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 and customs clearance to deliver the A3591-5CN312 screw-locking insert to your facility. Contact us for pricing and lead time.
How to install a HELI-COIL tanged helical insert?
Install a HELI-COIL tanged insert by drilling to the specified size, tapping with the correct STI tap (5/16"-24 for this model), then winding the insert into the tapped hole using a tang drive tool. After installation, break off the tang for a flush finish.
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.
