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HELI-COIL Thread Repair Kit: M18-1.50 Free-Running - Insert & Tool Kits
HELI-COILInsert & Tool Kits

HELI-COIL Thread Repair Kit: M18-1.50 Free-Running

The HELI-COIL Thread Repair Kit (MPN 5523-18) is a tanged tang style insert and tool kit for free-running, M18-1.50 thread size repairs in metal. It includes an 18-8 stainless steel insert with right-hand, fine…

SKU 3G-OTH-528003

Also listed as: 552318 · 5523 18

Brand
HELI-COIL
Item
Thread Repair Kit: M18-1.50 Free-Running
Category
Insert & Tool Kits
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
5523-18
Type
Free-Running, M18-1.50 Thread Size, Stainless Steel
Finish Type
Plain
Thread Type
Fine
STI Tap Size
Special STI
Thread Direction
Right Hand
Compatible Material
Metal
Material Grade/Class
18-8
System of Measurement
Metric

Technical Documents

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

Product Description

The HELI-COIL Thread Repair Kit (MPN 5523-18) is a tanged tang style insert and tool kit for free-running, M18-1.50 thread size repairs in metal. It includes an 18-8 stainless steel insert with right-hand, fine metric threads and a Special STI tap. 3G Electric interprets this demand and sources the genuine kit across 14 industrial departments, with specialist depth in combustion, pumps and controls as an authorised distributor.

Frequently Asked Questions

What is the HELI-COIL Thread Repair Kit 5523-18 used for?

The HELI-COIL Thread Repair Kit 5523-18 is used to restore damaged internal threads in metal components. It installs a free-running, M18-1.50 stainless steel insert to create strong, wear-resistant threads, commonly applied in automotive, industrial machinery, and equipment maintenance.

What are the specifications of the HELI-COIL 5523-18 kit?

The kit includes an 18-8 stainless steel insert with M18-1.50 fine metric threads, right-hand direction, plain finish, and a Special STI tap. It is designed for metal substrates and comes as a tanged tang style free-running insert and tool kit.

Where to buy HELI-COIL Thread Repair Kit 5523-18 worldwide?

3G Electric supplies the genuine HELI-COIL Thread Repair Kit 5523-18 worldwide. We handle full logistics, customs clearance, and delivery to your site. As a global industrial solutions provider, we source this kit across 14 departments, including specialist expertise in combustion, pumps, and controls.

How to install a HELI-COIL thread repair insert?

Drill out the damaged thread to the specified size, tap the hole using the included Special STI tap, then insert the HELI-COIL tang style insert using the installation tool. Break off the tang after installation. Always follow the manufacturer's instructions for torque and depth.

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 insert & tool kits. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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