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HELI-COIL Free-Running Tanged Helical Insert, 1/4"-20, 100 PK - Free-Running Tanged Helical Inserts
HELI-COILFree-Running Tanged Helical Inserts

HELI-COIL Free-Running Tanged Helical Insert, 1/4"-20, 100 PK

The HELI-COIL Helical Insert is a free-running, tanged tang style insert with a 1/4"-20 thread size, right-hand, coarse thread, and 18-8 metal construction. It features a dry film lubricant and a tensile strength of…

SKU 3G-OTH-598915

Also listed as: A11854CNW500 · A1185 4CNW500

Brand
HELI-COIL
Item
Free-Running Tanged Helical Insert, 1/4"-20, 100 PK
Category
Free-Running Tanged Helical Inserts
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Technical Specifications

HELI-COIL
Manufacturer Part Number
A1185-4CNW500
Type
Free-Running, 100 PK
Thread Size
1/4"-20

Technical Documents

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

Product Description

The HELI-COIL Helical Insert is a free-running, tanged tang style insert with a 1/4"-20 thread size, right-hand, coarse thread, and 18-8 metal construction. It features a dry film lubricant and a tensile strength of 200,000 to 250,000 psi, supplied in a 100-piece pack (MPN A1185-4CNW500).

Frequently Asked Questions

What is a HELI-COIL helical insert used for?

A HELI-COIL helical insert repairs or reinforces tapped threads in metal, providing a durable 18-8 stainless steel thread with 200,000 to 250,000 psi tensile strength. It is used in automotive, aerospace, and industrial applications to restore stripped threads or strengthen soft materials.

What are the specifications of the HELI-COIL A1185-4CNW500 insert?

The HELI-COIL A1185-4CNW500 is a free-running, tanged tang style insert with a 1/4\"-20 thread size, right-hand, coarse thread. It is made of 18-8 metal with a dry film lubricant, tensile strength 200,000 to 250,000 psi, and supplied in a 100-piece pack.

Where to buy HELI-COIL helical inserts worldwide?

3G Electric supplies HELI-COIL helical inserts worldwide, handling full logistics and customs clearance. As a global industrial solutions provider, we source and deliver genuine HELI-COIL products like the A1185-4CNW500 to any destination, ensuring compliance and timely delivery.

How to install a HELI-COIL tanged tang insert?

To install a HELI-COIL tanged tang insert, drill out the damaged thread to the specified tap drill size, tap the hole with the correct HELI-COIL tap, then use a tang-style installation tool to wind the insert into place. Break off the tang after installation for a 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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