HELI-COIL Screw-Locking Tangless Helical Insert
The HELI-COIL Helical Insert (Tangless Tang Style) is a screw-locking, plain finish insert in a 100-piece pack, with a 1/4"-28 fine thread, right-hand direction, and 18-8 material grade. It offers a tensile strength…
SKU 3G-OTH-532469
Also listed as: AT35914C375 · AT3591 4C375
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 (Tangless Tang Style) is a screw-locking, plain finish insert in a 100-piece pack, with a 1/4"-28 fine thread, right-hand direction, and 18-8 material grade. It offers a tensile strength of 200,000 to 250,000 psi, is compatible with metal, and uses an STI tap size of 1/4"-28. 3G Electric interprets demand and delivers this genuine industrial insert across 14 departments—with specialist depth in combustion, pumps, and controls—ensuring you get the right answer, not just a catalog.
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 components, providing a strong, wear-resistant internal thread. It is commonly used in automotive, aerospace, and industrial maintenance to restore stripped threads without replacing the entire part.
What are the specifications of the HELI-COIL AT3591-4C375 insert?
The HELI-COIL AT3591-4C375 is a screw-locking, tangless helical insert with a 1/4\"-28 fine thread, right-hand direction, and 18-8 material grade. It offers a tensile strength of 200,000 to 250,000 psi, is compatible with metal, and comes in a 100-piece pack with plain finish.
Where to buy HELI-COIL helical inserts in worldwide?
3G Electric supplies and delivers genuine HELI-COIL helical inserts worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to ensure your order arrives at your facility, no matter the location.
How to install a tangless helical insert?
To install a tangless helical insert, drill the hole to the specified STI tap size (1/4\"-28 for this insert), tap the hole with the corresponding STI tap, then use a tangless installation tool to wind the insert into the threaded hole. No tang removal step is needed.
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.
