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HELI-COIL Screw-Locking Tanged Helical Insert - Screw-Locking Tanged Helical Inserts
HELI-COILScrew-Locking Tanged Helical Inserts

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 1/8"-7 coarse thread, right-hand direction, and a tensile strength of…

SKU 3G-OTH-528810

Also listed as: 358518CN1125 · 3585 18CN1125

Brand
HELI-COIL
Item
Screw-Locking Tanged Helical Insert
Category
Screw-Locking Tanged Helical Inserts
Available to Order
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

HELI-COIL
Manufacturer Part Number
3585-18CN1125
Type
Screw-Locking, Stainless Steel
Tensile Strength
200,000 to 250,000 psi
Finish Type
Plain
Thread Size
1 1/8"-7
Thread Type
Coarse
STI Tap Size
1-1/8"-7
Thread Direction
Right Hand
Compatible Material
Metal
Material Grade/Class
18-8
System of Measurement
Inch

Technical Documents

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HELI-COIL Products
3G Electric (S) Pte. Ltd. — Singapore

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.

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.

Used in

Common applications for HELI-COIL
Aerospace engine repair — HELI-COIL STI taps for M12x1.75 metric threads in aluminum alloy components
Automotive transmission rebuild — HELI-COIL STI taps for 7/16-14 UNC threads in cast iron housings
Industrial pump maintenance — HELI-COIL STI taps for #10-32 UNF threads in stainless steel pump bodies
Hydraulic cylinder repair — HELI-COIL STI taps for M6x1 metric threads in steel cylinder heads
General manufacturing — HELI-COIL STI taps for 9/16-18 UNF threads in machinery base plates

HELI-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.

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