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

HELI-COIL Screw-Locking Tanged Helical Insert

The HELI-COIL Helical Insert is a tanged tang-style, screw-locking insert in a plain finish, supplied in a 100-piece pack. It features a 1/4"-20 coarse right-hand thread, is made from Nitronic 60 material with a…

SKU 3G-OTH-529041

Also listed as: A35854EN375 · A3585 4EN375

Brand
HELI-COIL
Item
Screw-Locking Tanged Helical Insert
Category
Screw-Locking Tanged Helical Inserts
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Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
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Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

HELI-COIL
Manufacturer Part Number
A3585-4EN375
Type
Screw-Locking, Plain, 100 PK
Tensile Strength
200,000 psi
Finish Type
Plain
Thread Size
1/4"-20
Thread Type
Coarse
STI Tap Size
1/4"-20
Thread Direction
Right Hand
Compatible Material
Metal
Material Grade/Class
Nitronic 60
System of Measurement
Inch

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

Product Description

The HELI-COIL Helical Insert is a tanged tang-style, screw-locking insert in a plain finish, supplied in a 100-piece pack. It features a 1/4"-20 coarse right-hand thread, is made from Nitronic 60 material with a tensile strength of 200,000 psi, and is compatible with metal substrates. This inch-system insert requires an STI tap size of 1/4"-20 (MPN A3585-4EN375).

Frequently Asked Questions

What is a HELI-COIL helical insert used for?

A HELI-COIL helical insert repairs or reinforces threads in metal. This screw-locking tanged tang style, 1/4"-20 coarse thread, prevents loosening under vibration. It is used in automotive, aerospace, and industrial maintenance to restore stripped threads with a tensile strength of 200,000 psi.

What are the specifications of the HELI-COIL A3585-4EN375 insert?

This HELI-COIL insert has a 1/4"-20 coarse right-hand thread, made from Nitronic 60 material with a tensile strength of 200,000 psi. It is a screw-locking tanged tang style in plain finish, compatible with metal substrates, and requires an STI tap size of 1/4"-20. Supplied in a 100-piece pack.

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 and customs clearance for delivery to any location. Contact us to order the A3585-4EN375 screw-locking tanged insert in a 100-piece pack.

How to install a HELI-COIL tanged helical insert?

To install a HELI-COIL tanged insert, drill out the damaged thread to the specified size, tap the hole using the correct STI tap (1/4"-20 for this insert), then use a tang-style installation tool to wind the insert into the hole. Break off the tang after installation for a secure, screw-locking thread.

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 tanged 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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