HELI-COIL Screw-Locking Tanged Helical Insert
The HELI-COIL Helical Insert is a tanged tang-style, screw-locking insert made from 18-8 stainless steel with a plain finish. It features a 1 1/4"-7 coarse right-hand thread, an STI tap size of 1-1/8"-7, and a…
SKU 3G-OTH-529001
Also listed as: 358520CN1250 · 3585 20CN1250
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 made from 18-8 stainless steel with a plain finish. It features a 1 1/4"-7 coarse right-hand thread, an STI tap size of 1-1/8"-7, and a tensile strength of 200,000 to 250,000 psi, designed for use with metal materials.
Frequently Asked Questions
What is a HELI-COIL helical insert used for?
A HELI-COIL helical insert repairs or reinforces tapped threads in metal. This screw-locking tanged tang style, with 1 1/4"-7 coarse thread, provides strong, wear-resistant threads in applications like engine blocks or industrial equipment, preventing thread stripping under high loads.
What are the specifications of the HELI-COIL 3585-20CN1250?
This HELI-COIL insert has a 1 1/4"-7 coarse right-hand thread, STI tap size 1-1/8"-7, and tensile strength 200,000 to 250,000 psi. It is made from 18-8 stainless steel with a plain finish, designed for metal materials. The manufacturer part number is 3585-20CN1250.
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 this 1 1/4"-7 screw-locking insert to your facility. Contact us for availability and lead time on this part.
How to install a HELI-COIL tanged helical insert?
Installation requires drilling to the specified STI tap size (1-1/8"-7 for this insert), tapping the hole, then using a tang drive tool to insert the coil. After installation, break off the tang. Always follow HELI-COIL's generic instructions for proper thread engagement and torque.
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.
