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HELI-COIL Thread Repair Kit: Tanged Tang Style, Free-Running, M20-2.50 Thread Size - Insert & Tool Kits
HELI-COILInsert & Tool Kits

HELI-COIL Thread Repair Kit: Tanged Tang Style, Free-Running, M20-2.50 Thread Size

The HELI-COIL Thread Repair Kit (MPN 5403-20) is a tanged tang style kit for free-running M20-2.50 coarse metric threads, including helical inserts made from 18-8 material. It includes an STI tap sized M20-2.50, has…

SKU 3G-OTH-528106

Brand
HELI-COIL
Item
Thread Repair Kit: Tanged Tang Style, Free-Running, M20-2.50 Thread Size
Category
Insert & Tool Kits
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Technical Specifications

HELI-COIL
Manufacturer Part Number
5403-20
Type
Free-Running, M20-2.50 Thread Size
Overall Lg
30 mm
Finish Type
Plain
Thread Type
Coarse
STI Tap Size
M20-2.50
Thread Direction
Right Hand
Compatible Material
Metal
Material Grade/Class
18-8
Insert Types Included
Helical Inserts
System of Measurement
Metric
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HELI-COIL Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The HELI-COIL Thread Repair Kit (MPN 5403-20) is a tanged tang style kit for free-running M20-2.50 coarse metric threads, including helical inserts made from 18-8 material. It includes an STI tap sized M20-2.50, has a 30 mm overall length, a plain finish, and is compatible with metal substrates. 3G Electric interprets this demand and delivers genuine industrial equipment across 14 departments, with specialist depth in combustion, pumps and controls as an authorised distributor.

Frequently Asked Questions

What is the HELI-COIL Thread Repair Kit 5403-20 used for?

The HELI-COIL Thread Repair Kit 5403-20 is used to restore damaged internal threads in metal components. It includes helical inserts made from 18-8 material and an STI tap for M20-2.50 coarse metric threads, making it ideal for industrial maintenance and repair applications across machining and assembly operations.

What are the specifications of the HELI-COIL Thread Repair Kit 5403-20?

The HELI-COIL Thread Repair Kit 5403-20 features a free-running, tanged tang style for M20-2.50 coarse metric threads. It includes helical inserts of 18-8 material, an STI tap sized M20-2.50, a 30 mm overall length, a plain finish, and is compatible with metal substrates. Thread direction is right hand.

Where to buy HELI-COIL Thread Repair Kit 5403-20 worldwide?

3G Electric supplies the HELI-COIL Thread Repair Kit 5403-20 worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your location. Contact us to source this genuine HELI-COIL kit for your thread repair needs.

How to install a HELI-COIL thread repair insert?

To install a HELI-COIL insert, drill out the damaged thread to the specified size, then tap the hole using the included STI tap. Wind the insert onto the installation tool and thread it into the tapped hole until it sits below the surface. Break off the tang for free-running operation. 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 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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HELI-COIL Thread Repair Kit: Tanged Tang Style, Free-Running, #10-24 Thread Size, Stainless Steel (MPN 5401-3). Key specifications — Material Grade/Class: 18-8; Thread Direction: Right Hand; Insert Types Included: Helical Inserts; STI Tap Size: #10-24; Compatible Material: Metal; System of Measurement: Inch; Brand: HELI-COIL; Thread Type: Coarse.
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HELI-COIL Thread Repair Kit: Tanged Tang Style, Free-Running, 3/4"-16 Thread Size, Stainless Steel (MPN 5402-12). Key specifications — Material Grade/Class: 18-8; Thread Direction: Right Hand; Insert Types Included: Helical Inserts; STI Tap Size: 3/4"-16; Compatible Material: Metal; System of Measurement: Inch; Brand: HELI-COIL; Thread Type: Fine.
HELI-COIL Thread Repair Kit: Tanged Tang Style, Free-Running, M14-2.00 Thread Size, 21 mm Overall Lg (MPN 5403-14). Key specifications — Material Grade/Class: 18-8; Thread Direction: Right Hand; Insert Types Included: Helical Inserts; STI Tap Size: M14-2.00; Compatible Material: Metal; System of Measurement: Metric; Brand: HELI-COIL; Thread Type: Coarse.
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