HELI-COIL Screw-Locking Tanged Helical Insert, 1/4"-20, Plain, 100 PK
The HELI-COIL Helical Insert is a tanged tang style, screw-locking insert in a plain finish, supplied in a 100-pack. It features a 1/4"-20 coarse thread size, right-hand thread direction, and is made from 18-8…
SKU 3G-OTH-528797
Also listed as: A35854CN500 · A3585 4CN500
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-pack. It features a 1/4"-20 coarse thread size, right-hand thread direction, and is made from 18-8 material grade with a tensile strength of 200,000 to 250,000 psi. Compatible with metal, this inch-system insert uses an STI tap size of 1/4"-20 (MPN A3585-4CN500).
Frequently Asked Questions
What is a HELI-COIL helical insert used for?
A HELI-COIL helical insert repairs or reinforces threads in metal. The screw-locking design resists vibration loosening. It is commonly used in automotive, aerospace, and industrial maintenance to restore stripped threads or strengthen aluminum components.
What are the specifications of the HELI-COIL A3585-4CN500 insert?
This HELI-COIL insert has a 1/4"-20 coarse thread size, right-hand direction, and 18-8 material grade. Tensile strength is 200,000 to 250,000 psi. It uses an STI tap size of 1/4"-20, is plain finish, and comes in a 100-pack. System of measurement is inch.
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 to your facility. Contact us to order the A3585-4CN500 or other HELI-COIL thread repair inserts.
How to install a HELI-COIL screw-locking insert?
Drill out the damaged thread to the specified STI tap size, then tap the hole with an STI tap. Install the insert using a tang drive tool until it sits below the surface. Break off the tang with a punch. The screw-locking feature holds the fastener under vibration.
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.
