HELI-COIL Helical Insert: Tangless Tang Style, Screw-Locking, 1/4"-20 Thread Size
The HELI-COIL Helical Insert is a Tangless Tang Style screw-locking insert with a 1/4"-20 coarse thread, plain finish, and 18-8 material grade. It offers a tensile strength of 200,000 to 250,000 psi, is compatible…
SKU 3G-OTH-532451
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Product Description
The HELI-COIL Helical Insert is a Tangless Tang Style screw-locking insert with a 1/4"-20 coarse thread, plain finish, 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-pack. 3G Electric interprets demand and sources this insert across 14 industrial departments, with specialist depth in combustion, pumps, and controls as an authorised distributor.
Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.
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. It is commonly used in automotive, aerospace, and industrial maintenance applications.
What are the specifications of the HELI-COIL AT3585-4C500 insert?
The HELI-COIL AT3585-4C500 is a 1/4"-20 coarse thread, screw-locking, tangless helical insert. It has a tensile strength of 200,000 to 250,000 psi, is made from 18-8 stainless steel, and comes in a 100-pack with a plain finish. The STI tap size is 1/4"-20.
Where to buy HELI-COIL helical inserts worldwide?
3G Electric supplies HELI-COIL helical inserts worldwide. We interpret your demand, source the correct part, and handle logistics and customs for delivery globally. Contact us for availability and lead time on the AT3585-4C500 or other HELI-COIL inserts.
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"-20 for this insert). Use a tangless installation tool to wind the insert into the threaded hole until it sits slightly below the surface. No tang removal is needed, simplifying installation.
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.









