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HELI-COIL Thread Repair Kit: Tanged Tang Style, Free-Running, 5/16"-24 Thread Size - Insert & Tool Kits
HELI-COILInsert & Tool Kits

HELI-COIL Thread Repair Kit: Tanged Tang Style, Free-Running, 5/16"-24 Thread Size

The HELI-COIL Thread Repair Kit (MPN 5402-5) is a tanged tang style insert and tool kit for repairing 5/16"-24 fine threads in metal. It includes 18-8 stainless steel helical inserts and an STI tap of the same size…

SKU 3G-OTH-528105

Brand
HELI-COIL
Item
Thread Repair Kit: Tanged Tang Style, Free-Running, 5/16"-24 Thread Size
Category
Insert & Tool Kits
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Technical Specifications

HELI-COIL
Manufacturer Part Number
5402-5
Type
Free-Running, Stainless Steel
Finish Type
Plain
Thread Size
5/16"-24
Thread Type
Fine
STI Tap Size
5/16"-24
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 5402-5) is a tanged tang style insert and tool kit for repairing 5/16"-24 fine threads in metal. It includes 18-8 stainless steel helical inserts and an STI tap of the same size, with a free-running, right-hand thread design. 3G Electric interprets this demand and delivers 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 5402-5 used for?

The HELI-COIL Thread Repair Kit 5402-5 is used to restore damaged 5/16"-24 fine threads in metal components. It includes 18-8 stainless steel helical inserts and an STI tap, providing a free-running, right-hand thread repair solution for industrial maintenance and manufacturing applications.

What are the specifications of the HELI-COIL Thread Repair Kit 5402-5?

The HELI-COIL Thread Repair Kit 5402-5 has a thread size of 5/16"-24, fine thread type, right-hand direction, and includes helical inserts made of 18-8 stainless steel. It is a tanged tang style, free-running design, compatible with metal substrates, and uses inch measurement.

Where to buy the HELI-COIL Thread Repair Kit 5402-5 worldwide?

3G Electric supplies the genuine HELI-COIL Thread Repair Kit 5402-5 worldwide. We handle full logistics, customs clearance, and delivery to your facility. As a global industrial solutions provider, we source and deliver this kit across 14 industrial departments, including specialist expertise in combustion, pumps, and controls.

How to install a HELI-COIL thread repair 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 installation tool. Break off the tang after installation. Always follow the manufacturer's instructions for proper thread depth 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, M3-0.50 Thread Size, Stainless Steel (MPN 5403-3). Key specifications — Material Grade/Class: 18-8; Thread Direction: Right Hand; Insert Types Included: Helical Inserts; STI Tap Size: M3-0.50; 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, M3-0.50 Thread Size, Stainless Steel (MPN 5403-3). Key specifications — Material Grade/Class: 18-8; Thread Direction: Right Hand; Insert Types Included: Helical Inserts; STI Tap Size: M3-0.50; Compatible Material: Metal; System of Measurement: Metric; Brand: HELI-COIL; Thread Type: Coarse.
HELI-COIL Thread Repair Kit: Tanged Tang Style, Free-Running, 3/8"-24 Thread Size, Stainless Steel (MPN 5402-6). Key specifications — Material Grade/Class: 18-8; Thread Direction: Right Hand; Insert Types Included: Helical Inserts; STI Tap Size: 3/8"-24; 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, 3/8"-24 Thread Size, Stainless Steel (MPN 5402-6). Key specifications — Material Grade/Class: 18-8; Thread Direction: Right Hand; Insert Types Included: Helical Inserts; STI Tap Size: 3/8"-24; Compatible Material: Metal; System of Measurement: Inch; Brand: HELI-COIL; Thread Type: Fine.
HELI-COIL Thread Repair Kit: Tanged Tang Style, Free-Running, M14-1.25 Thread Size, Stainless Steel (MPN 5408-14). Key specifications — Material Grade/Class: 18-8; Thread Direction: Right Hand; Insert Types Included: Helical Inserts; STI Tap Size: M14-1.25; Compatible Material: Metal; System of Measurement: Metric; Brand: HELI-COIL; Thread Type: Fine.
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HELI-COIL Thread Repair Kit: Tanged Tang Style, Free-Running, M14-1.25 Thread Size, Stainless Steel (MPN 5408-14). Key specifications — Material Grade/Class: 18-8; Thread Direction: Right Hand; Insert Types Included: Helical Inserts; STI Tap Size: M14-1.25; Compatible Material: Metal; System of Measurement: Metric; Brand: HELI-COIL; Thread Type: Fine.
HELI-COIL Thread Repair Kit: Tanged Tang Style, Free-Running, 1 1/4"-7 Thread Size, Stainless Steel (MPN 5521-20). Key specifications — Material Grade/Class: 18-8; Thread Direction: Right Hand; Insert Types Included: Helical Inserts; STI Tap Size: 1-1/4"-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 1/4"-7 Thread Size, Stainless Steel (MPN 5521-20). Key specifications — Material Grade/Class: 18-8; Thread Direction: Right Hand; Insert Types Included: Helical Inserts; STI Tap Size: 1-1/4"-7; Compatible Material: Metal; System of Measurement: Inch; Brand: HELI-COIL; Thread Type: Coarse.
HELI-COIL Thread Repair Kit: Tanged Tang Style, Free-Running, 5/8"-18 Thread Size, Stainless Steel (MPN 5402-10). Key specifications — Material Grade/Class: 18-8; Thread Direction: Right Hand; Insert Types Included: Helical Inserts; STI Tap Size: 5/8"-18; 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, 5/8"-18 Thread Size, Stainless Steel (MPN 5402-10). Key specifications — Material Grade/Class: 18-8; Thread Direction: Right Hand; Insert Types Included: Helical Inserts; STI Tap Size: 5/8"-18; Compatible Material: Metal; System of Measurement: Inch; Brand: HELI-COIL; Thread Type: Fine.
HELI-COIL Thread Repair Kit: Tanged Tang Style, Free-Running, 1/2"-14 Thread Size, Stainless Steel (MPN 5407-8). Key specifications — Material Grade/Class: 18-8; Thread Direction: Right Hand; Insert Types Included: Helical Inserts; STI Tap Size: 1/2"-14; Compatible Material: Metal; System of Measurement: Inch; Brand: HELI-COIL; Thread Type: NPT.
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HELI-COIL Thread Repair Kit: Tanged Tang Style, Free-Running, 1/2"-14 Thread Size, Stainless Steel (MPN 5407-8). Key specifications — Material Grade/Class: 18-8; Thread Direction: Right Hand; Insert Types Included: Helical Inserts; STI Tap Size: 1/2"-14; Compatible Material: Metal; System of Measurement: Inch; Brand: HELI-COIL; Thread Type: NPT.
HELI-COIL Thread Repair Kit: Tanged Tang Style, Free-Running, #6-32 Thread Size, Stainless Steel (MPN 5401-06). Key specifications — Material Grade/Class: 18-8; Thread Direction: Right Hand; Insert Types Included: Helical Inserts; STI Tap Size: #6-32; 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, #6-32 Thread Size, Stainless Steel (MPN 5401-06). Key specifications — Material Grade/Class: 18-8; Thread Direction: Right Hand; Insert Types Included: Helical Inserts; STI Tap Size: #6-32; Compatible Material: Metal; System of Measurement: Inch; Brand: HELI-COIL; Thread Type: Coarse.
HELI-COIL Thread Repair Kit: Tanged Tang Style, Free-Running, M16-2.00 Thread Size, 24 mm Overall Lg (MPN 5403-16). Key specifications — Material Grade/Class: 18-8; Thread Direction: Right Hand; Insert Types Included: Helical Inserts; STI Tap Size: M16-2.00; Compatible Material: Metal; System of Measurement: Metric; Brand: HELI-COIL; Drill Bit Size: 21/32.
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