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HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, 1/4"-28 Thread Size, Plain - Free-Running Tanged Helical Inserts
HELI-COILFree-Running Tanged Helical Inserts

HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, 1/4"-28 Thread Size, Plain

3G Electric supplies the HELI-COIL Helical Insert: Tanged Tang Style, a free-running tanged helical insert with a 1/4"-28 thread size, fine thread, right-hand orientation, and plain finish. Made from 18-8 stainless…

SKU 3G-OTH-599124

Also listed as: 11914CN500S · 1191 4CN500S

Brand
HELI-COIL
Item
Helical Insert: Tanged Tang Style, Free-Running, 1/4"-28 Thread Size, Plain
Category
Free-Running 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
1191-4CN500S
Type
Free-Running, Plain, 1,000 PK
Thread Size
1/4"-28

Technical Documents

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

Product Description

3G Electric supplies the HELI-COIL Helical Insert: Tanged Tang Style, a free-running tanged helical insert with a 1/4"-28 thread size, fine thread, right-hand orientation, and plain finish. Made from 18-8 stainless steel (metal), this inch-series insert offers a tensile strength range of 200,000 to 250,000 psi and comes in a 1,000-piece pack (MPN 1191-4CN500S). As an authorized distributor across 14 industrial departments—with specialist depth in combustion, pumps, and controls—we interpret demand and deliver genuine industrial solutions, not just a catalog.

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, free-running thread in applications like automotive, aerospace, and industrial machinery where stripped or worn threads need restoration without replacing the entire part.

What are the specifications of the HELI-COIL 1191-4CN500S insert?

This HELI-COIL insert has a 1/4"-28 fine thread, right-hand orientation, plain finish, and is made from 18-8 stainless steel. It offers a tensile strength of 200,000 to 250,000 psi and comes in a 1,000-piece pack (MPN 1191-4CN500S).

Where to buy HELI-COIL helical inserts worldwide?

3G Electric supplies HELI-COIL helical inserts worldwide. We handle full logistics and customs clearance to deliver genuine industrial parts globally. Contact us to source this 1/4"-28 free-running insert for your application.

How to install a HELI-COIL tanged helical insert?

Install a HELI-COIL tanged insert by drilling out the damaged thread to the specified tap drill size, tapping the hole with the correct HELI-COIL tap, then winding the insert into place using a tang installation tool. Break off the tang after installation for a secure, free-running thread.

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 free-running 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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