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HELI-COIL Screw-Locking Tangless Helical Insert - Screw-Locking Tangless Helical Inserts
HELI-COILScrew-Locking Tangless Helical Inserts

HELI-COIL Screw-Locking Tangless Helical Insert

The HELI-COIL Helical Insert is a screw-locking tangless helical insert in a #4-40 thread size, plain finish, 1,000 PK. It is made from 18-8 material with a tensile strength of 200,000 to 250,000 psi, right-hand…

SKU 3G-OTH-532445

Also listed as: T358504C112S · T3585 04C112S

Brand
HELI-COIL
Item
Screw-Locking Tangless Helical Insert
Part Number
T3585-04C112S
Category
Screw-Locking Tangless 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
T3585-04C112S
Type
Screw-Locking, #4-40 Thread Size, Plain, 1,000 PK
Tensile Strength
200,000 to 250,000 psi
Finish Type
Plain
Thread Type
Coarse
STI Tap Size
#4-40
Thread Direction
Right Hand
Compatible Material
Metal
Material Grade/Class
18-8
System of Measurement
Inch

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

Product Description

The HELI-COIL Helical Insert is a screw-locking tangless helical insert in a #4-40 thread size, plain finish, 1,000 PK. It is made from 18-8 material with a tensile strength of 200,000 to 250,000 psi, right-hand thread direction, and coarse thread type, compatible with metal. 3G Electric interprets customer demand and delivers this genuine industrial insert across 14 departments—and far more—with specialist depth in combustion, pumps and controls as a trust anchor.

Frequently Asked Questions

What is a HELI-COIL tangless helical insert used for?

A HELI-COIL tangless helical insert repairs or reinforces threads in metal components, providing a durable, screw-locking thread for #4-40 fasteners. It is commonly used in automotive, aerospace, and industrial maintenance applications where stripped threads need restoration without replacing the entire part.

What are the specifications of the HELI-COIL T3585-04C112S insert?

This HELI-COIL insert has a #4-40 thread size, coarse thread type, plain finish, and is made from 18-8 stainless steel with a tensile strength of 200,000 to 250,000 psi. It is a screw-locking tangless design, right-hand thread direction, and comes in a 1,000-piece pack.

Where to buy HELI-COIL helical inserts in worldwide?

3G Electric supplies and delivers genuine HELI-COIL helical inserts worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to ensure your order arrives at your facility, no matter the location. Contact us for availability and lead time.

How to install a tangless helical insert?

To install a tangless helical insert, drill out the damaged thread to the specified STI tap size (#4-40), tap the hole with the correct STI tap, then use a tangless installation tool to wind the insert into the tapped hole until it sits slightly below the surface. No tang removal step is needed.

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 tangless 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 tangless helical insert for repairing or reinforcing threads in metal. Made from 18-8 stainless steel with tensile strength 200,000 to 250,000 psi. Features #4-40 coarse right-hand thread and plain finish. Tangless design eliminates need to break off tang after installation. Pack of 100
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Screw-locking tangless helical insert for repairing or reinforcing threads in metal. Made from 18-8 stainless steel with tensile strength 200,000 to 250,000 psi. Features #4-40 coarse right-hand thread and plain finish. Tangless design eliminates need to break off tang after installation. Pack of 100
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HELI-COIL
Screw-locking tangless helical insert for repairing or reinforcing threads in metal. Made from 18-8 stainless steel with dry film lubricant finish, fine right-hand thread, and tensile strength of 200,000 to 250,000 psi. Requires STI tap size #10-32. Pack of 100

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