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HELI-COIL 5403-18 M18-2.50 Free-Running Thread Repair Kit - Insert & Tool Kits
HELI-COILInsert & Tool Kits

HELI-COIL 5403-18 M18-2.50 Free-Running Thread Repair Kit

The HELI-COIL Thread Repair Kit (MPN 5403-18) is a tanged tang style kit for free-running, M18-2.50 coarse thread repairs in metal. It includes helical inserts made from 18-8 stainless steel, with a 27 mm overall…

SKU 3G-OTH-528108

Also listed as: 540318 · 5403 18

Brand
HELI-COIL
Item
5403-18 M18-2.50 Free-Running Thread Repair Kit
Part Number
5403-18
Category
Insert & Tool Kits
Available to Order
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Technical specs
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Local availability & support — the Philippines

Delivery
5–8 business days door-to-door; Bureau of Customs clearance typically 2–4 business days.
Payment
Invoicing in PHP or USD. Bank transfer and corporate PO accepted.
Ships to
Manila, Quezon City, Cebu, Davao, Batangas

Technical Specifications

HELI-COIL
Manufacturer Part Number
5403-18
Type
Free-Running, M18-2.50 Thread Size
Overall Lg
27 mm
Finish Type
Plain
Thread Type
Coarse
STI Tap Size
M18-2.50
Thread Direction
Right Hand
Compatible Material
Metal
Material Grade/Class
18-8
Insert Types Included
Helical Inserts
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 5403-18) is a tanged tang style kit for free-running, M18-2.50 coarse thread repairs in metal. It includes helical inserts made from 18-8 stainless steel, with a 27 mm overall length, right-hand thread direction, and an STI tap size of M18-2.50. 3G Electric interprets your demand for this metric repair solution and sources it across our 14 industrial departments, with specialist depth in combustion, pumps, and controls ensuring we get the right answer for your application.

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 the HELI-COIL Thread Repair Kit 5403-18 used for?

The HELI-COIL Thread Repair Kit 5403-18 is used to restore damaged M18-2.50 coarse threads in metal components. It includes helical inserts made from 18-8 stainless steel and an STI tap, making it ideal for industrial maintenance and repair across machining, automotive, and heavy equipment applications.

What are the specifications of the HELI-COIL Thread Repair Kit 5403-18?

The HELI-COIL Thread Repair Kit 5403-18 features M18-2.50 thread size, 27 mm overall length, right-hand thread direction, and coarse thread type. It includes helical inserts made from 18-8 stainless steel, a plain finish, and an STI tap size of M18-2.50. It is designed for metal substrates and uses metric measurement.

Where to buy the HELI-COIL Thread Repair Kit 5403-18 worldwide?

3G Electric supplies the HELI-COIL Thread Repair Kit 5403-18 worldwide. We interpret your demand, source the correct metric repair solution across our 14 industrial departments, and handle full logistics and customs clearance to deliver to your facility. Contact us for availability and lead time.

How to install the HELI-COIL Thread Repair Kit 5403-18?

To install the HELI-COIL Thread Repair Kit 5403-18, drill out the damaged thread to the specified size, tap the hole using the included STI tap (M18-2.50), then insert the helical insert using the tang-style tool. Ensure the insert sits below the surface. Break off the tang after installation for a free-running thread.

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
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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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