HELI-COIL Screw-Locking Tanged Helical Insert
The HELI-COIL Helical Insert is a tanged tang style, screw-locking insert in a plain finish, supplied in a 100-piece pack. This inch-system insert features a 1/4"-28 fine thread, a tensile strength of 200,000 psi…
SKU 3G-OTH-528918
Also listed as: A35914EN500 · A3591 4EN500
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 tanged tang style, screw-locking insert in a plain finish, supplied in a 100-piece pack. This inch-system insert features a 1/4"-28 fine thread, a tensile strength of 200,000 psi, and is made from Nitronic 60 material for use in metal. It requires an STI tap size of 1/4"-28 and has a right-hand thread direction.
Frequently Asked Questions
What is a HELI-COIL helical insert used for?
A HELI-COIL helical insert repairs or reinforces threads in metal components. This screw-locking, tanged tang style insert with 1/4"-28 fine threads provides strong, wear-resistant threads in applications like automotive, aerospace, and industrial machinery, preventing thread stripping and extending part life.
What are the specifications of the HELI-COIL A3591-4EN500 insert?
This HELI-COIL insert has a 1/4"-28 fine thread size, right-hand direction, and requires an STI tap size of 1/4"-28. It is made from Nitronic 60 material with a tensile strength of 200,000 psi, comes in a plain finish, and is supplied 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, customs clearance, and delivery to your location. Contact us to order the A3591-4EN500 screw-locking insert or other HELI-COIL thread repair products for your application.
How to install a HELI-COIL tanged helical insert?
To install a HELI-COIL tanged insert, drill the hole to the specified size, tap it using the correct STI tap (1/4"-28 for this insert), then use a tang-style installation tool to wind the insert into the tapped hole. After installation, break off the tang with a punch for a secure, screw-locking thread.
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.
