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3G Electric
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
Part Number
4184-4CN080S
Category
Screw-Locking Tanged Helical Inserts
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Payment
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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 — Tangless screw-locking HELI-COIL inserts in 18-8 stainless steel for vibration-resistant threaded joints in airframe and engine components.
Automotive — Free-running tanged HELI-COIL inserts in metric sizes for repairing stripped threads in aluminum engine blocks and transmission housings.
Industrial machinery — STI taps and prewinder installation tools for on-site repair of threaded holes in cast iron and steel machine frames.
Oil and gas — Nitronic 60 HELI-COIL inserts for galling resistance in stainless steel valve bodies and pump housings exposed to corrosive media.
MRO and maintenance — HELI-COIL thread repair kits containing inserts, drill, tap, and installation tool for restoring damaged threads without replacing the parent component.
Electrical equipment — Screw-locking tangless HELI-COIL inserts for securing fasteners in metal enclosures and control panels subject to vibration.
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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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