HELI-COIL Helical Insert: Tanged Tang Style, Screw-Locking, 1 1/8"-7 Thread Size
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 1/8"-7 coarse thread, right-hand direction, and a tensile strength of…
SKU 3G-OTH-528810
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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 1/8"-7 coarse thread, right-hand direction, and a tensile strength of 200,000 to 250,000 psi, designed for use with metal materials. 3G Electric interprets this demand and delivers the genuine HELI-COIL part (MPN 3585-18CN1125) 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 helical insert used for?
A HELI-COIL helical insert repairs or strengthens threads in metal. This tanged, screw-locking 1 1/8"-7 coarse-thread insert (MPN 3585-18CN1125) provides a durable stainless steel thread for high-stress applications in machinery, automotive, and industrial equipment.
What are the specifications of the HELI-COIL 3585-18CN1125 insert?
This HELI-COIL insert has a 1 1/8"-7 coarse thread, right-hand direction, and is made from 18-8 stainless steel with a plain finish. It offers a tensile strength of 200,000 to 250,000 psi and requires an STI tap size of 1-1/8"-7. It is designed for use with metal materials.
Where to buy HELI-COIL helical inserts worldwide?
3G Electric supplies genuine HELI-COIL helical inserts, including the 1 1/8"-7 screw-locking model (MPN 3585-18CN1125), to customers worldwide. We handle full logistics, customs clearance, and delivery, ensuring you receive the correct part for your industrial 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 (1-1/8"-7 for this insert), then use a tang installation tool to wind the insert into the tapped hole. After installation, break off the tang with a punch. Always follow the manufacturer's instructions.
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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.









