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HELI-COIL Screw-Locking Tangless Helical Insert - Screw-Locking Tangless Helical Inserts
HELI-COILScrew-Locking Tangless Helical Inserts

HELI-COIL Screw-Locking Tangless Helical Insert

The HELI-COIL Helical Insert (Tangless Tang Style) is a screw-locking, #4-40 thread size, plain finish insert with a tensile strength of 200,000 to 250,000 psi. Made from 18-8 material, it is compatible with metal…

SKU 3G-OTH-532473

Also listed as: AT358504C168 · AT3585 04C168

Brand
HELI-COIL
Item
Screw-Locking Tangless Helical Insert
Category
Screw-Locking Tangless Helical Inserts
Available to Order
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Local availability & support — the Philippines

Delivery
5–8 business days door-to-door; Bureau of Customs clearance typically 2–4 business days.
Payment
Invoicing in PHP or USD. Bank transfer and corporate PO accepted.
Ships to
Manila, Quezon City, Cebu, Davao, Batangas

Technical Specifications

HELI-COIL
Manufacturer Part Number
AT3585-04C168
Type
Screw-Locking, #4-40 Thread Size, Plain, 100 PK
Tensile Strength
200,000 to 250,000 psi
Finish Type
Plain
Thread Type
Coarse
STI Tap Size
#4-40
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 (Tangless Tang Style) is a screw-locking, #4-40 thread size, plain finish insert with a tensile strength of 200,000 to 250,000 psi. Made from 18-8 material, it is compatible with metal and features a right-hand, coarse thread. Supplied in a 100-piece pack (MPN AT3585-04C168), this inch-system insert is designed for thread repair or reinforcement in metal substrates.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

Frequently Asked Questions

What is a HELI-COIL Tangless Helical Insert used for?

A HELI-COIL Tangless Helical Insert is used to repair or reinforce internal threads in metal substrates. The screw-locking design resists vibration loosening, while the tangless style eliminates the need for a tang break-off step, speeding installation in aerospace, automotive, and industrial maintenance applications.

What are the specifications of the HELI-COIL AT3585-04C168 insert?

The HELI-COIL AT3585-04C168 is a #4-40 thread size, coarse thread, right-hand, screw-locking helical insert made from 18-8 stainless steel. It has a tensile strength of 200,000 to 250,000 psi, a plain finish, and is supplied in a 100-piece pack. It requires an STI tap size of #4-40.

Where to buy HELI-COIL helical inserts worldwide?

3G Electric supplies HELI-COIL helical inserts worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your facility. Contact us to order the AT3585-04C168 or other HELI-COIL thread repair inserts for your maintenance or production needs.

How to install a tangless helical insert?

To install a tangless helical insert, drill out the damaged thread to the specified size, tap the hole using the correct STI tap (e.g., #4-40 for this insert), then use a tangless installation tool to wind the insert into the tapped hole. No tang break-off is needed, simplifying the process and reducing debris.

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 screw-locking 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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