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HELI-COIL Helical Insert: Tangless Tang Style, Screw-Locking, #4-40 Thread Size - Screw-Locking Tangless Helical Inserts
HELI-COILScrew-Locking Tangless Helical Inserts

HELI-COIL Helical Insert: Tangless Tang Style, Screw-Locking, #4-40 Thread Size

The HELI-COIL Helical Insert (Tangless Tang Style) is a screw-locking, #4-40 thread size insert in a 100-piece pack. It features an 18-8 material grade, dry film lubricant finish, and a tensile strength of 200,000 to…

SKU 3G-OTH-532464

Brand
HELI-COIL
Item
Helical Insert: Tangless Tang Style, Screw-Locking, #4-40 Thread Size
Category
Screw-Locking Tangless Helical Inserts
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Technical Specifications

HELI-COIL
Manufacturer Part Number
AT3585-04CW168
Type
Screw-Locking, #4-40 Thread Size, 100 PK
Tensile Strength
200,000 to 250,000 psi
Finish Type
Dry Film Lubricant
Thread Type
Coarse
STI Tap Size
#4-40
Thread Direction
Right Hand
Compatible Material
Metal
Material Grade/Class
18-8
System of Measurement
Inch
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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 insert in a 100-piece pack. It features an 18-8 material grade, dry film lubricant finish, and a tensile strength of 200,000 to 250,000 psi. This inch-system, right-hand coarse thread insert is compatible with metal and requires an STI tap size of #4-40.

Frequently Asked Questions

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

A HELI-COIL tangless helical insert repairs or reinforces threads in metal, providing a strong, wear-resistant internal thread. The screw-locking version resists vibration loosening. It is commonly used in automotive, aerospace, and industrial maintenance applications where reliable thread strength is critical.

What are the specifications of the HELI-COIL AT3585-04CW168 insert?

This HELI-COIL insert has a #4-40 thread size, 18-8 material grade, and a tensile strength of 200,000 to 250,000 psi. It features a dry film lubricant finish, right-hand coarse thread, and requires an STI tap size of #4-40. It comes in a 100-piece pack and is compatible with metal substrates.

Where to buy HELI-COIL tangless inserts worldwide?

3G Electric supplies HELI-COIL tangless helical inserts worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to deliver the AT3585-04CW168 and other thread repair inserts to your facility. Contact us for pricing and lead time on your order.

How to install a tangless helical insert?

To install a tangless helical insert, drill the hole to the specified size, tap it 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 to break off simplifies installation. Always follow the manufacturer's instructions for best results.

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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HELI-COIL Helical Insert: Tangless Tang Style, Screw-Locking, #6-32 Thread Size, Plain, 100 PK (MPN AT3585-06C138). Key specifications — Material Grade/Class: 18-8; Thread Direction: Right Hand; STI Tap Size: #6-32; Compatible Material: Metal; System of Measurement: Inch; Brand: HELI-COIL; Tensile Strength: 200,000 to 250,000 psi; Thread Type: Coarse.
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HELI-COIL Helical Insert: Tangless Tang Style, Screw-Locking, #8-32 Thread Size, Plain, 1,000 PK (MPN T3585-2C246S). Key specifications — Material Grade/Class: 18-8; Thread Direction: Right Hand; STI Tap Size: #8-32; Compatible Material: Metal; System of Measurement: Inch; Brand: HELI-COIL; Tensile Strength: 200,000 to 250,000 psi; Thread Type: Coarse.
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