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HELI-COIL Helical Insert: Tangless Tang Style, Screw-Locking, 1/4"-20 Thread Size - Screw-Locking Tangless Helical Inserts
HELI-COILScrew-Locking Tangless Helical Inserts

HELI-COIL Helical Insert: Tangless Tang Style, Screw-Locking, 1/4"-20 Thread Size

HELI-COIL Tangless Tang Style Helical Insert, a screw-locking tangless insert with 1/4"-20 coarse thread, 18-8 material grade, and tensile strength of 200,000 to 250,000 psi. Supplied in a 100-pack with dry film…

SKU 3G-OTH-532447

Brand
HELI-COIL
Item
Helical Insert: Tangless Tang Style, Screw-Locking, 1/4"-20 Thread Size
Category
Screw-Locking Tangless Helical Inserts
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Technical Specifications

HELI-COIL
Manufacturer Part Number
AT3585-4CW375
Type
Screw-Locking, 100 PK
Tensile Strength
200,000 to 250,000 psi
Finish Type
Dry Film Lubricant
Thread Size
1/4"-20
Thread Type
Coarse
STI Tap Size
1/4"-20
Thread Direction
Right Hand
Compatible Material
Metal
Material Grade/Class
18-8
System of Measurement
Inch
View Full Spec Sheet

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

Product Description

HELI-COIL Tangless Tang Style Helical Insert, a screw-locking tangless insert with 1/4"-20 coarse thread, 18-8 material grade, and tensile strength of 200,000 to 250,000 psi. Supplied in a 100-pack with dry film lubricant finish, it is compatible with metal and uses a right-hand thread direction.

Frequently Asked Questions

What is a HELI-COIL Tangless Tang Style helical insert used for?

A HELI-COIL Tangless Tang Style helical insert is used to repair or reinforce threaded holes in metal, providing a durable, screw-locking thread. It is ideal for applications requiring high tensile strength (200,000 to 250,000 psi) and vibration resistance, such as in automotive, aerospace, and industrial machinery.

What are the specifications of the HELI-COIL AT3585-4CW375 insert?

The HELI-COIL AT3585-4CW375 is a screw-locking tangless insert with 1/4\"-20 coarse thread, 18-8 material grade, and tensile strength of 200,000 to 250,000 psi. It has a right-hand thread direction, dry film lubricant finish, and is supplied in a 100-pack. It is compatible with metal and uses an STI tap size of 1/4\"-20.

Where to buy HELI-COIL helical inserts in worldwide?

You can buy HELI-COIL helical inserts worldwide through 3G Electric, which sources and delivers genuine industrial parts globally. As a supplier, 3G Electric handles logistics, customs clearance, and delivery to your location, ensuring you receive the correct HELI-COIL inserts for your application.

How to install a tangless helical insert?

To install a tangless helical insert, drill and tap the hole to the specified STI tap size (1/4\"-20 for this insert). Use a tangless installation tool to wind the insert into the threaded hole until it is slightly below the surface. No tang removal is needed, simplifying installation 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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HELI-COIL Helical Insert: Tangless Tang Style, Screw-Locking, #8-32 Thread Size, Plain, 1,000 PK (MPN T3585-2C328S). 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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HELI-COIL Helical Insert: Tangless Tang Style, Screw-Locking, #8-32 Thread Size, Plain, 1,000 PK (MPN T3585-2C328S). 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.
HELI-COIL Helical Insert: Tangless Tang Style, Screw-Locking, #2-56 Thread Size, Plain, 1,000 PK (MPN T3585-02C129S). Key specifications — Material Grade/Class: 18-8; Thread Direction: Right Hand; STI Tap Size: #2-56; Compatible Material: Metal; System of Measurement: Inch; Brand: HELI-COIL; Drill Bit Size: 3/32; Tensile Strength: 200,000 to 250,000 psi.
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HELI-COIL Helical Insert: Tangless Tang Style, Screw-Locking, #4-40 Thread Size, Plain, 1,000 PK (MPN T3585-04C168S). Key specifications — Material Grade/Class: 18-8; Thread Direction: Right Hand; STI Tap Size: #4-40; 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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