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HELI-COIL Helical Insert: Tangless Tang Style, Free-Running, #10-24 Thread Size, Plain - Free-Running Tangless Helical Inserts
HELI-COILFree-Running Tangless Helical Inserts

HELI-COIL Helical Insert: Tangless Tang Style, Free-Running, #10-24 Thread Size, Plain

The HELI-COIL Helical Insert is a free-running tangless insert with a #10-24 coarse thread, plain finish, and 18-8 material grade. It offers a tensile strength of 200,000 to 250,000 psi and is compatible with metal…

SKU 3G-OTH-527334

Also listed as: AT11853C285 · AT1185 3C285

Brand
HELI-COIL
Item
Helical Insert: Tangless Tang Style, Free-Running, #10-24 Thread Size, Plain
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
AT1185-3C285
Type
Free-Running, #10-24 Thread Size, Plain, 100 PK
Tensile Strength
200,000 to 250,000 psi
Finish Type
Plain
Thread Type
Coarse
STI Tap Size
#10-24
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 #10-24 coarse thread, plain finish, and 18-8 material grade. It offers a tensile strength of 200,000 to 250,000 psi and is compatible with metal substrates. Supplied in a 100-piece pack, this inch-system insert uses a right-hand thread direction and requires an STI tap size of #10-24.

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. It provides a strong, wear-resistant thread for #10-24 fasteners, ideal for automotive, aerospace, and industrial maintenance applications where stripped threads need restoration.

What are the specifications of the HELI-COIL AT1185-3C285 insert?

This HELI-COIL insert is free-running, tangless, with #10-24 coarse thread, plain finish, and 18-8 material grade. It has a tensile strength of 200,000 to 250,000 psi, right-hand thread direction, and requires an STI tap size of #10-24. Supplied in a 100-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 the AT1185-3C285 tangless insert to your facility. Contact us for a quote and delivery timeline.

How to install a tangless helical insert?

To install a HELI-COIL tangless insert, drill the hole to the specified size, tap it using the correct STI tap (#10-24), then use a tangless installation tool to wind the insert into the tapped hole. No tang removal is needed, simplifying installation in blind holes.

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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