HELI-COIL Free-Running Tangless Helical Insert, 1/4"-28, Plain, 100 PK
The HELI-COIL Helical Insert is a free-running, tangless tang-style insert with a 1/4"-28 fine thread, right-hand direction, and plain finish. Supplied in a 100-pack, it is made from 18-8 material with a tensile…
SKU 3G-OTH-527337
Also listed as: AT11914C375 · AT1191 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 is a free-running, tangless tang-style insert with a 1/4"-28 fine thread, right-hand direction, and plain finish. Supplied in a 100-pack, it is made from 18-8 material with a tensile strength of 200,000 to 250,000 psi, compatible with metal, and requires 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 components. It provides a durable, free-running internal thread for fasteners, commonly used in automotive, aerospace, and industrial maintenance applications where stripped or worn threads need restoration.
What are the specifications of the HELI-COIL AT1191-4C375 insert?
This HELI-COIL insert has a 1/4\"-28 fine thread, right-hand direction, and plain finish. It is made from 18-8 material with a tensile strength of 200,000 to 250,000 psi. The STI tap size is #10-32, and it comes in a 100-pack for metal applications.
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 this 100-pack of tangless inserts to your facility, ensuring you get the right thread repair solution for your application.
How to install a HELI-COIL tangless insert?
To install a HELI-COIL tangless insert, drill the hole to the specified size, tap it using the correct STI tap (size #10-32 for this insert), then use a tangless installation tool to wind the insert into the tapped hole. No tang removal is needed, simplifying the process.
Used in
Common applications for HELI-COILHELI-COIL Products
3G Electric supplies HELI-COIL free-running tangless helical inserts. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
