HELI-COIL Screw-Locking Tangless Helical Insert
The HELI-COIL Helical Insert is a screw-locking tangless helical insert in #10-32 thread size, plain finish, 100 per pack. Made from 18-8 material with a tensile strength of 200,000 to 250,000 psi, it features a…
SKU 3G-OTH-532478
Also listed as: AT35913C285 · AT3591 3C285
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 screw-locking tangless helical insert in #10-32 thread size, plain finish, 100 per pack. Made from 18-8 material with a tensile strength of 200,000 to 250,000 psi, it features a right-hand fine thread and is compatible with metal. This inch-system insert uses an STI tap size of #10-32.
Frequently Asked Questions
What is a HELI-COIL tangless helical insert used for?
A HELI-COIL tangless helical insert repairs or reinforces threads in metal. The screw-locking design resists vibration loosening, and the tangless style eliminates the need for a break-off tang, simplifying installation. It is commonly used in automotive, aerospace, and industrial maintenance applications.
What are the specifications of the HELI-COIL AT3591-3C285 insert?
This HELI-COIL insert has a #10-32 thread size, fine thread, right-hand direction, and plain finish. It is made from 18-8 stainless steel with a tensile strength of 200,000 to 250,000 psi. The STI tap size is #10-32, and it comes 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, customs clearance, and delivery to your facility. Contact us to order the AT3591-3C285 or other thread repair inserts for your application.
How to install a tangless helical insert?
To install a tangless helical insert, drill the hole to the specified size, tap it using the correct STI tap (for this insert, #10-32), then use a tangless installation tool to wind the insert into the tapped hole. The screw-locking feature holds it in place without a separate locking element.
Used in
Common applications for HELI-COILHELI-COIL Products
3G Electric supplies HELI-COIL screw-locking tangless helical inserts. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
