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HELI-COIL Helical Insert: Tanged Tang Style, Screw-Locking, 5/16"-24 Thread Size - Screw-Locking Tanged Helical Inserts
HELI-COILScrew-Locking Tanged Helical Inserts

HELI-COIL Helical Insert: Tanged Tang Style, Screw-Locking, 5/16"-24 Thread Size

The HELI-COIL Helical Insert is a tanged tang-style, screw-locking insert in a plain finish, supplied in a 100-pack. It features a 5/16"-24 fine thread, right-hand direction, and an 18-8 material grade with a tensile…

SKU 3G-OTH-529021

Also listed as: A35915CN469 · A3591 5CN469

Brand
HELI-COIL
Item
Helical Insert: Tanged Tang Style, Screw-Locking, 5/16"-24 Thread Size
Category
Screw-Locking Tanged Helical Inserts
Available to Order
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Technical specs
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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
A3591-5CN469
Type
Screw-Locking, Plain, 100 PK
Tensile Strength
200,000 to 250,000 psi
Finish Type
Plain
Thread Size
5/16"-24
Thread Type
Fine
STI Tap Size
5/16"-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 tanged tang-style, screw-locking insert in a plain finish, supplied in a 100-pack. It features a 5/16"-24 fine thread, right-hand direction, and an 18-8 material grade with a tensile strength of 200,000 to 250,000 psi. Designed for metal compatibility, this inch-system insert uses an STI tap size of 5/16"-24 (MPN A3591-5CN469).

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 helical insert used for?

A HELI-COIL helical insert repairs or reinforces threads in metal components. This screw-locking tanged tang style, 5/16"-24 fine thread, 18-8 stainless steel insert provides a strong, wear-resistant thread in applications like automotive, aerospace, and industrial machinery.

What are the specifications of the HELI-COIL A3591-5CN469 insert?

This HELI-COIL insert has a 5/16"-24 fine thread, right-hand direction, and an 18-8 material grade with tensile strength of 200,000 to 250,000 psi. It is a screw-locking tanged tang style in plain finish, compatible with metal, and uses an STI tap size of 5/16"-24. Supplied in a 100-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 to deliver this 5/16"-24 screw-locking insert (MPN A3591-5CN469) to your facility. Contact us for availability and delivery to your region.

How to install a tanged helical insert?

To install a HELI-COIL tanged insert, drill the hole to the specified STI tap size (5/16"-24), tap the threads, then use a tang break-off tool to insert the coil. After installation, break off the tang with a punch. Ensure the insert is fully seated below the surface for proper locking.

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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