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HELI-COIL Helical Insert: Tanged Tang Style, Screw-Locking, M4-0.70 Thread Size - Screw-Locking Tanged Helical Inserts
HELI-COILScrew-Locking Tanged Helical Inserts

HELI-COIL Helical Insert: Tanged Tang Style, Screw-Locking, M4-0.70 Thread Size

The HELI-COIL Helical Insert is a tanged tang-style, screw-locking insert with M4-0.70 thread size, 100 PK, and a dry film lubricant finish. It features a tensile strength of 200,000 to 250,000 psi, requires a 4.2mm…

SKU 3G-OTH-529005

Also listed as: A41844CNW080 · A4184 4CNW080

Brand
HELI-COIL
Item
Helical Insert: Tanged Tang Style, Screw-Locking, M4-0.70 Thread Size
Category
Screw-Locking Tanged Helical Inserts
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Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

HELI-COIL
Manufacturer Part Number
A4184-4CNW080
Type
Screw-Locking, M4-0.70 Thread Size, 100 PK
Tensile Strength
200,000 to 250,000 psi
Finish Type
Dry Film Lubricant
Thread Type
Coarse
STI Tap Size
M4-0.70
Drill Bit Size
4.2mm
Thread Direction
Right Hand
Compatible Material
Metal
Material Grade/Class
18-8
System of Measurement
Metric

Technical Documents

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HELI-COIL Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The HELI-COIL Helical Insert is a tanged tang-style, screw-locking insert with M4-0.70 thread size, 100 PK, and a dry film lubricant finish. It features a tensile strength of 200,000 to 250,000 psi, requires a 4.2mm drill bit and M4-0.70 STI tap, and is made from 18-8 material for metal compatibility.

Frequently Asked Questions

What is a HELI-COIL helical insert used for?

A HELI-COIL helical insert repairs or reinforces threads in metal components. It provides a durable, screw-locking thread for M4-0.70 fasteners, ideal for automotive, aerospace, and industrial maintenance applications where stripped threads need restoration.

What are the specifications of the HELI-COIL A4184-4CNW080 insert?

This HELI-COIL insert has an M4-0.70 thread size, 18-8 material grade, tensile strength of 200,000 to 250,000 psi, and requires a 4.2mm drill bit with an M4-0.70 STI tap. It is a tanged tang-style, screw-locking type with dry film lubricant finish, 100 pieces per pack.

Where to buy HELI-COIL helical inserts in worldwide?

3G Electric supplies HELI-COIL helical inserts worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to deliver genuine HELI-COIL products like the A4184-4CNW080 to any international destination.

How to install a HELI-COIL tanged helical insert?

To install, drill a 4.2mm hole, tap it with an M4-0.70 STI tap, then use a tang installation tool to insert the HELI-COIL coil. After installation, break off the tang. Ensure the metal surface is clean and lubricated for proper screw-locking engagement.

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 screw-locking tanged helical inserts. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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