HELI-COIL Helical Insert: Tangless Tang Style, Screw-Locking, 1/4"-28 Thread Size
HELI-COIL Tangless Tang Style Helical Insert, a screw-locking tangless insert with 1/4"-28 fine thread, 18-8 material grade, and dry film lubricant finish. Supplied in a 100-piece pack (MPN AT3591-4CW375), it offers…
SKU 3G-OTH-532475
Also listed as: AT35914CW375 · AT3591 4CW375
Local availability & support — Singapore
- Local office
- 20 Woodlands Link #09-05, Singapore 738733
- Phone
- +65 8878 8355
- Delivery
- Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
- Payment
- Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
- Ships to
- Singapore
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Product Description
HELI-COIL Tangless Tang Style Helical Insert, a screw-locking tangless insert with 1/4"-28 fine thread, 18-8 material grade, and dry film lubricant finish. Supplied in a 100-piece pack (MPN AT3591-4CW375), it offers a tensile strength of 200,000 to 250,000 psi for metal-compatible, right-hand thread applications.
Frequently Asked Questions
What is a HELI-COIL Tangless Tang Style helical insert used for?
A HELI-COIL Tangless Tang Style helical insert repairs or reinforces tapped threads in metal. The screw-locking version resists vibration loosening. The tangless design eliminates the need to break off a tang after installation, saving time in production and maintenance applications.
What are the specifications of the HELI-COIL AT3591-4CW375 insert?
The HELI-COIL AT3591-4CW375 is a screw-locking tangless insert with 1/4\"-28 fine thread, 18-8 material grade, and dry film lubricant finish. It has a tensile strength of 200,000 to 250,000 psi, is compatible with metal, and comes in a 100-piece pack.
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 and customs clearance to deliver the AT3591-4CW375 and other HELI-COIL products to your facility. Contact us for a quote and delivery timeline.
How to install a tangless helical insert?
To install a tangless helical insert, drill and tap the hole to the STI tap size (1/4\"-28 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 step is needed, simplifying the process.
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.
