HELI-COIL Screw-Locking Tanged Helical Insert, 1/4"-28, Plain, 100 PK
The HELI-COIL Helical Insert is a tanged tang style, screw-locking insert with a 1/4"-28 fine thread, plain finish, and 18-8 material grade. It offers a tensile strength of 200,000 to 250,000 psi, is compatible with…
SKU 3G-OTH-529058
Also listed as: A35914CN250 · A3591 4CN250
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Product Description
The HELI-COIL Helical Insert is a tanged tang style, screw-locking insert with a 1/4"-28 fine 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-piece pack (MPN A3591-4CN250).
Frequently Asked Questions
What is a HELI-COIL helical insert used for?
A HELI-COIL helical insert repairs or reinforces threaded holes in metal. The screw-locking design resists vibration loosening, making it ideal for automotive, aerospace, and industrial applications where joint integrity is critical.
What are the specifications of the HELI-COIL A3591-4CN250 insert?
This HELI-COIL insert has a 1/4"-28 fine thread, 18-8 material grade, and tensile strength of 200,000 to 250,000 psi. It is tanged tang style, screw-locking, plain finish, right-hand thread, and comes in a 100-piece pack.
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 genuine parts like the A3591-4CN250 to your facility, wherever it is located.
How to install a HELI-COIL tanged helical insert?
Install a HELI-COIL tanged insert by drilling to the specified STI tap size (1/4"-28), tapping the hole, then using a tang-style installation tool to wind the insert into place. After installation, break off the tang for a flush finish.
Used in
Common applications for HELI-COILHELI-COIL Products
3G Electric supplies HELI-COIL screw-locking tanged helical inserts. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
