HELI-COIL Free-Running Tangless Helical Insert, #4-40 Thread, Plain, 100 PK
The HELI-COIL Helical Insert is a free-running, tangless insert with a #4-40 thread size, plain finish, and right-hand coarse threads. Made from 18-8 material with a tensile strength of 200,000 to 250,000 psi, it is…
SKU 3G-OTH-527316
Also listed as: AT118504C224 · AT1185 04C224
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.
Need installation or engineering help?
Ask a question
Product Description
The HELI-COIL Helical Insert is a free-running, tangless insert with a #4-40 thread size, plain finish, and right-hand coarse threads. Made from 18-8 material with a tensile strength of 200,000 to 250,000 psi, it is compatible with metal and comes in a 100-piece pack (MPN AT1185-04C224).
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, providing a durable free-running coarse thread. It is ideal for aerospace, automotive, and industrial applications where thread strength and reliability are critical.
What are the specifications of the HELI-COIL AT1185-04C224 insert?
This HELI-COIL insert has a #4-40 thread size, right-hand coarse threads, and a plain finish. It is made from 18-8 material with a tensile strength of 200,000 to 250,000 psi. The tangless design eliminates the need for tab removal, and it comes in a 100-piece pack.
Where to buy HELI-COIL helical inserts worldwide?
3G Electric supplies HELI-COIL helical inserts worldwide, handling full logistics and customs clearance. As a global industrial solutions provider, we source and deliver genuine HELI-COIL parts like the AT1185-04C224 to support your thread repair needs.
How to install a tangless helical insert?
To install a tangless helical insert, drill and tap the hole to the specified STI tap size (#4-40 for this insert). Use a tangless installation tool to wind the insert into the tapped hole until it sits slightly below the surface. No tang removal is needed.
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.
