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HELI-COIL Free-Running Tangless Helical Insert, #2-56 Thread Size, Plain, 100 PK - Free-Running Tangless Helical Inserts
HELI-COILFree-Running Tangless Helical Inserts

HELI-COIL Free-Running Tangless Helical Insert, #2-56 Thread Size, Plain, 100 PK

The HELI-COIL Helical Insert is a free-running tangless insert with a #2-56 thread size, plain finish, and 18-8 material grade. It features a right-hand coarse thread, tensile strength of 200,000 to 250,000 psi, and…

SKU 3G-OTH-527312

Also listed as: AT118502C129 · AT1185 02C129

Brand
HELI-COIL
Item
Free-Running Tangless Helical Insert, #2-56 Thread Size, Plain, 100 PK
Category
Free-Running Tangless Helical Inserts
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Delivery
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
AT1185-02C129
Type
Free-Running, #2-56 Thread Size, Plain, Plain, 100 PK
Tensile Strength
200,000 to 250,000 psi
Finish Type
Plain
Thread Type
Coarse
STI Tap Size
#2-56
Thread Direction
Right Hand
Compatible Material
Metal
Material Grade/Class
18-8
System of Measurement
Inch

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 tangless insert with a #2-56 thread size, plain finish, and 18-8 material grade. It features a right-hand coarse thread, tensile strength of 200,000 to 250,000 psi, and is compatible with metal. Supplied in a 100-piece pack (MPN AT1185-02C129), this inch-system insert is designed for thread repair and reinforcement in metal applications.

Frequently Asked Questions

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

A HELI-COIL tangless helical insert is used for thread repair and reinforcement in metal applications. It restores damaged internal threads or strengthens new threads in softer materials, providing a durable 18-8 stainless steel thread with a tensile strength of 200,000 to 250,000 psi.

What are the specifications of the HELI-COIL AT1185-02C129 insert?

The HELI-COIL AT1185-02C129 is a free-running tangless insert with a #2-56 coarse thread, right-hand direction, and plain finish. It is made of 18-8 stainless steel, has a tensile strength of 200,000 to 250,000 psi, and comes in a 100-piece pack. It requires an STI tap size of #2-56.

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 genuine HELI-COIL parts like the AT1185-02C129 and deliver them to your facility, ensuring compliance with international shipping requirements.

How to install a tangless helical insert?

To install a tangless helical insert, drill the hole to the specified size, tap it with the correct STI tap (e.g., #2-56 for this insert), then use a tangless installation tool to wind the insert into the tapped hole. No tang removal is needed, simplifying the process for metal thread repair.

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 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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Cross-referenced by specification & description
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This OSG helical-flute thread mill is designed for threading stainless steel and super alloys. It features a #10-24 UNC thread size, 3 flutes, and EXO coated carbide construction for wear resistance. The helical flute geometry aids chip evacuation and reduces cutting forces in tough materials
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This helical-flute thread mill is designed for threading stainless steel and super alloys. Its EXO coated carbide construction and 3-flute geometry provide efficient chip evacuation in demanding materials. Thread size: 3/8"-16 UNC
OSG Thread Mill: Helical Flute, 1/4"-28 UNF, 3 Flute, EXO Coated Carbide (MPN 4100003311)
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OSG Thread Mill: Helical Flute, 1/4"-28 UNF, 3 Flute, EXO Coated Carbide (MPN 4100003311)
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OSG Thread Mill: Helical Flute, 3/4"-10 UNC, 4 Flute, EXO Coated Carbide (MPN 4100004611)

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