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HELI-COIL M4-0.70 Screw-Locking Tanged Helical Insert, Plain, 18-8, 1,000 PK - Screw-Locking Tanged Helical Inserts
HELI-COILScrew-Locking Tanged Helical Inserts

HELI-COIL M4-0.70 Screw-Locking Tanged Helical Insert, Plain, 18-8, 1,000 PK

The HELI-COIL Helical Insert is a tanged tang style, screw-locking insert with M4-0.70 thread size, plain finish, and 18-8 material grade. It requires a 4.2mm drill bit and M4-0.70 STI tap, offering a tensile…

SKU 3G-OTH-529094

Also listed as: 41844CN080S · 4184 4CN080S

Brand
HELI-COIL
Item
M4-0.70 Screw-Locking Tanged Helical Insert, Plain, 18-8, 1,000 PK
Category
Screw-Locking Tanged Helical Inserts
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Local availability & support

Delivery
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
4184-4CN080S
Type
Screw-Locking, M4-0.70 Thread Size, Plain, 1,000 PK
Tensile Strength
200,000 to 250,000 psi
Finish Type
Plain
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

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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, plain finish, and 18-8 material grade. It requires a 4.2mm drill bit and M4-0.70 STI tap, offering a tensile strength of 200,000 to 250,000 psi. Supplied in a 1,000-piece pack (MPN 4184-4CN080S), this metric, right-hand threaded insert is compatible with metal substrates.

Frequently Asked Questions

What is a HELI-COIL helical insert used for?

A HELI-COIL helical insert repairs or reinforces threads in metal substrates. This screw-locking, tanged tang style M4-0.70 insert provides a strong, wear-resistant thread in soft materials like aluminum or cast iron, preventing thread stripping under high loads.

What are the specifications of the HELI-COIL 4184-4CN080S insert?

This HELI-COIL insert has an M4-0.70 thread size, 18-8 material grade, plain finish, and right-hand thread direction. It requires a 4.2mm drill bit and M4-0.70 STI tap. Tensile strength is 200,000 to 250,000 psi. Supplied in a 1,000-piece 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, customs clearance, and delivery to your facility. Contact us for pricing and lead time on the M4-0.70 screw-locking insert (MPN 4184-4CN080S).

How to install a HELI-COIL tanged tang insert?

Drill a hole using a 4.2mm bit, then tap it with an M4-0.70 STI tap. Insert the HELI-COIL tang-first using a compatible installation tool. After insertion, break off the tang with a punch. The screw-locking feature secures the fastener against vibration.

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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Screw-locking tanged helical insert for thread repair or reinforcement in metal substrates. Made from 18-8 stainless steel with dry film lubricant finish, M4-0.70 coarse thread, right-hand direction, tensile strength 200,000 to 250,000 psi. Requires STI tap size M4-0.70. Supplied in 1,000-piece pack
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Screw-locking tangless helical insert for repairing or reinforcing threads in metal components. Features 18-8 stainless steel construction with a plain finish, 1/4"-28 fine thread, and right-hand direction. Tensile strength range of 200,000 to 250,000 psi. Supplied in a 100-piece pack. Suitable for use in automotive, aerospace, and industrial maintenance applications
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Screw-locking tangless helical insert for #2-56 coarse threads. Made of 18-8 stainless steel with dry film lubricant finish. Tensile strength 200,000 to 250,000 psi. Requires STI tap size #2-56. Used to repair or reinforce internal threads in metal components
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Screw-locking tanged helical insert for repairing or reinforcing internal threads in metal components. Made from 18-8 stainless steel with dry film lubricant finish, tensile strength 200,000 to 250,000 psi. Requires #4-40 STI tap, right-hand coarse thread. Pack of 100
Screw-locking tanged helical insert for repairing or reinforcing threaded holes in metal. Made from Nitronic 60 with 200,000 psi tensile strength. Features #8-32 coarse thread, right-hand direction, and plain finish. Requires STI tap size #8-32. Supplied in a 100-piece pack
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