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HELI-COIL Thread Repair Kit: Tanged Tang Style, Free-Running, #5-40 Thread Size - Insert & Tool Kits
HELI-COILInsert & Tool Kits

HELI-COIL Thread Repair Kit: Tanged Tang Style, Free-Running, #5-40 Thread Size

The HELI-COIL Thread Repair Kit (MPN 5401-05) is a tanged tang style kit for free-running, #5-40 coarse thread repairs in metal. It includes helical inserts made from 18-8 stainless steel with a right-hand thread…

SKU 3G-OTH-527853

Brand
HELI-COIL
Item
Thread Repair Kit: Tanged Tang Style, Free-Running, #5-40 Thread Size
Category
Insert & Tool Kits
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Technical Specifications

HELI-COIL
Manufacturer Part Number
5401-05
Type
Free-Running, #5-40 Thread Size, Stainless Steel
Finish Type
Plain
Thread Type
Coarse
STI Tap Size
#5-40
Thread Direction
Right Hand
Compatible Material
Metal
Material Grade/Class
18-8
Insert Types Included
Helical Inserts
System of Measurement
Inch
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HELI-COIL Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The HELI-COIL Thread Repair Kit (MPN 5401-05) is a tanged tang style kit for free-running, #5-40 coarse thread repairs in metal. It includes helical inserts made from 18-8 stainless steel with a right-hand thread direction and an STI tap size of #5-40, using inch measurements.

Frequently Asked Questions

What is a HELI-COIL Thread Repair Kit used for?

A HELI-COIL Thread Repair Kit restores damaged internal threads in metal components. It uses 18-8 stainless steel helical inserts to create strong, free-running #5-40 coarse threads, ideal for automotive, industrial, and maintenance repairs where original threads are stripped or worn.

What are the specifications of the HELI-COIL 5401-05 kit?

The HELI-COIL 5401-05 kit is a tanged tang style, free-running thread repair set for #5-40 coarse threads. It includes helical inserts made from 18-8 stainless steel, right-hand thread direction, an STI tap size of #5-40, and is compatible with metal substrates using inch measurements.

Where to buy HELI-COIL thread repair kits worldwide?

3G Electric supplies HELI-COIL thread repair kits like the 5401-05 to customers worldwide. We handle full logistics, customs clearance, and delivery, ensuring you receive genuine industrial parts for your repair needs, regardless of your location.

How to install a HELI-COIL thread insert?

To install a HELI-COIL insert, drill out the damaged thread to the specified size, tap the hole using the included STI tap, then insert the helical coil using the tang-style tool. Break off the tang after installation. Always follow the manufacturer's instructions for proper thread engagement and torque.

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, 1"-12 Thread Size, 1 1/2 in Overall Lg (MPN 5528-161). Key specifications — Material Grade/Class: 18-8; Thread Direction: Right Hand; Insert Types Included: Helical Inserts; STI Tap Size: 1"-12; Compatible Material: Metal; System of Measurement: Inch; Brand: HELI-COIL; Thread Type: Fine.
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HELI-COIL Thread Repair Kit: Tanged Tang Style, Free-Running, M11-1.50 Thread Size, Stainless Steel (MPN 5403-11). Key specifications — Material Grade/Class: 18-8; Thread Direction: Right Hand; Thread Size: M11-1.50; Insert Types Included: Helical Inserts; STI Tap Size: M11-1.50; Compatible Material: Metal; System of Measurement: Metric; Brand: HELI-COIL.
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HELI-COIL Thread Repair Kit: Tanged Tang Style, Free-Running, M11-1.50 Thread Size, Stainless Steel (MPN 5403-11). Key specifications — Material Grade/Class: 18-8; Thread Direction: Right Hand; Thread Size: M11-1.50; Insert Types Included: Helical Inserts; STI Tap Size: M11-1.50; Compatible Material: Metal; System of Measurement: Metric; Brand: HELI-COIL.
HELI-COIL Thread Repair Kit: Tanged Tang Style, Free-Running, 1 1/8"-7 Thread Size, Stainless Steel (MPN 5521-18). Key specifications — Material Grade/Class: 18-8; Thread Direction: Right Hand; Insert Types Included: Helical Inserts; STI Tap Size: 1-1/8"-7; 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, 1 1/8"-7 Thread Size, Stainless Steel (MPN 5521-18). Key specifications — Material Grade/Class: 18-8; Thread Direction: Right Hand; Insert Types Included: Helical Inserts; STI Tap Size: 1-1/8"-7; Compatible Material: Metal; System of Measurement: Inch; Brand: HELI-COIL; Thread Type: Coarse.
HELI-COIL Thread Repair Kit: Tanged Tang Style, Free-Running, 7/16"-20 Thread Size, Stainless Steel (MPN 5402-7). Key specifications — Material Grade/Class: 18-8; Thread Direction: Right Hand; Insert Types Included: Helical Inserts; STI Tap Size: 7/16"-20; Compatible Material: Metal; System of Measurement: Inch; Brand: HELI-COIL; Thread Type: Fine.
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HELI-COIL Thread Repair Kit: Tanged Tang Style, Free-Running, M12-1.75 Thread Size, Stainless Steel (MPN 5403-12). Key specifications — Material Grade/Class: 18-8; Thread Direction: Right Hand; Insert Types Included: Helical Inserts; STI Tap Size: M12-1.75; Compatible Material: Metal; System of Measurement: Metric; Brand: HELI-COIL; Thread Type: Coarse.
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HELI-COIL Thread Repair Kit: Tanged Tang Style, Free-Running, M8-1.25 Thread Size, Stainless Steel (MPN 5403-8). Key specifications — Material Grade/Class: 18-8; Thread Direction: Right Hand; Insert Types Included: Helical Inserts; STI Tap Size: M8-1.25; Compatible Material: Metal; System of Measurement: Metric; Brand: HELI-COIL; Thread Type: Coarse.
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