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HELI-COIL Thread Repair Kit: Tanged Tang Style, Free-Running, 7/16"-14 Thread Size - Insert & Tool Kits
HELI-COILInsert & Tool Kits

HELI-COIL Thread Repair Kit: Tanged Tang Style, Free-Running, 7/16"-14 Thread Size

The HELI-COIL Thread Repair Kit (MPN 5401-7) is a tanged tang style kit for free-running, stainless steel helical inserts. It includes a 7/16"-14 STI tap and inserts with an 18-8 material grade, right-hand coarse…

SKU 3G-OTH-528070

Brand
HELI-COIL
Item
Thread Repair Kit: Tanged Tang Style, Free-Running, 7/16"-14 Thread Size
Category
Insert & Tool Kits
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Technical Specifications

HELI-COIL
Manufacturer Part Number
5401-7
Type
Free-Running, Stainless Steel
Finish Type
Plain
Thread Size
7/16"-14
Thread Type
Coarse
STI Tap Size
7/16"-14
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 5401-7) is a tanged tang style kit for free-running, stainless steel helical inserts. It includes a 7/16"-14 STI tap and inserts with an 18-8 material grade, right-hand coarse thread, and plain finish, designed for metal substrates.

Frequently Asked Questions

What is the HELI-COIL Thread Repair Kit 5401-7 used for?

The HELI-COIL Thread Repair Kit 5401-7 is used to restore damaged internal threads in metal components. It installs 18-8 stainless steel helical inserts with a 7/16"-14 coarse thread, providing a durable, free-running repair for industrial machinery, automotive, and equipment maintenance applications.

What are the specifications of the HELI-COIL 5401-7 kit?

The HELI-COIL 5401-7 kit includes a 7/16"-14 STI tap and tanged tang style helical inserts. The inserts are 18-8 stainless steel, right-hand coarse thread, plain finish, and compatible with metal substrates. It is an inch-system kit designed for free-running thread repair.

Where to buy the HELI-COIL 5401-7 thread repair kit worldwide?

3G Electric supplies the HELI-COIL 5401-7 thread repair kit worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your facility. Contact us to order this kit for your thread repair needs.

How to install a HELI-COIL thread insert from the 5401-7 kit?

To install a HELI-COIL insert from the 5401-7 kit, drill out the damaged thread to the specified size, tap the hole using the included 7/16"-14 STI tap, then wind the insert onto the installation tool and screw it into the tapped hole. Break off the tang after installation for a permanent repair.

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, #8-32 Thread Size, Stainless Steel (MPN 5401-2). Key specifications — Material Grade/Class: 18-8; Thread Direction: Right Hand; Insert Types Included: Helical Inserts; STI Tap Size: #8-32; 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, #12-24 Thread Size, Stainless Steel (MPN 5401-1). Key specifications — Material Grade/Class: 18-8; Thread Direction: Right Hand; Insert Types Included: Helical Inserts; STI Tap Size: #12-24; 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, #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, #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.
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.
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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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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.
HELI-COIL Thread Repair Kit: Tanged Tang Style, Free-Running, 5/16"-18 Thread Size, Stainless Steel (MPN 5401-5). Key specifications — Material Grade/Class: 18-8; Thread Direction: Right Hand; Insert Types Included: Helical Inserts; STI Tap Size: 5/16"-11; 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, 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, 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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