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HELI-COIL Free-Running Tangless Helical Insert - Free-Running Tangless Helical Inserts
HELI-COILFree-Running Tangless Helical Inserts

HELI-COIL Free-Running Tangless Helical Insert

The HELI-COIL Helical Insert is a free-running, tangless helical insert with a #10-32 thread size, plain finish, and right-hand thread direction. It is made from 18-8 material with a tensile strength of 200,000 to…

SKU 3G-OTH-527341

Also listed as: T11913C380S · T1191 3C380S

Brand
HELI-COIL
Item
Free-Running Tangless Helical Insert
Part Number
T1191-3C380S
Category
Free-Running Tangless Helical Inserts
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
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Technical Specifications

HELI-COIL
Manufacturer Part Number
T1191-3C380S
Type
Free-Running, #10-32 Thread Size, Plain, 1,000 PK
Tensile Strength
200,000 to 250,000 psi
Finish Type
Plain
Thread Type
Fine
STI Tap Size
#10-32
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 free-running, tangless helical insert with a #10-32 thread size, plain finish, and right-hand thread direction. It is made from 18-8 material with a tensile strength of 200,000 to 250,000 psi, compatible with metal, and supplied in a 1,000 PK. This inch-system insert uses an STI tap size of #10-32 and is designed for fine thread applications.

Frequently Asked Questions

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

A HELI-COIL tangless helical insert repairs or reinforces internal threads in metal. The tangless design eliminates the need for a break-off tang, simplifying installation. It is ideal for restoring stripped threads in automotive, aerospace, and industrial applications where a strong, reliable fine thread is required.

What are the specifications of the HELI-COIL T1191-3C380S insert?

This HELI-COIL insert has a #10-32 thread size, fine thread type, and right-hand direction. It is made from 18-8 stainless steel with a tensile strength of 200,000 to 250,000 psi. The plain finish insert uses an STI tap size of #10-32 and comes 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 and customs clearance to deliver genuine HELI-COIL products like the T1191-3C380S to your facility. Contact us for availability and lead time on your order.

How to install a tangless helical insert?

To install a HELI-COIL tangless insert, drill the hole to the specified size, tap it with the correct STI tap, then use a tangless installation tool to wind the insert into the threaded hole. No break-off tang means no post-installation removal step. Always follow the manufacturer's instructions for best results.

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 free-running 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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