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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

HELI-COIL Helical Insert: Tanged Tang Style, Screw-Locking, 5/16"-24 Thread Size, 100 PK (MPN A3591-5CNW469). These 18-8 stainless steel inserts feature a Dry Film Lubricant finish, right-hand fine threads, and a…

SKU 3G-OTH-528925

Also listed as: A35915CNW469 · A3591 5CNW469

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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Local availability & support

Delivery
Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

HELI-COIL
Manufacturer Part Number
A3591-5CNW469
Type
Screw-Locking, 100 PK
Tensile Strength
200,000 to 250,000 psi
Finish Type
Dry Film Lubricant
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

HELI-COIL Helical Insert: Tanged Tang Style, Screw-Locking, 5/16"-24 Thread Size, 100 PK (MPN A3591-5CNW469). These 18-8 stainless steel inserts feature a Dry Film Lubricant finish, right-hand fine threads, and a tensile strength of 200,000 to 250,000 psi, requiring an STI Tap Size of 5/16"-24 for installation in metal.

Frequently Asked Questions

What is a HELI-COIL screw-locking tanged helical insert used for?

A HELI-COIL screw-locking tanged helical insert repairs or reinforces tapped threads in metal. It provides a strong, wear-resistant thread that resists loosening under vibration. These 18-8 stainless steel inserts are ideal for automotive, aerospace, and industrial maintenance applications where thread integrity is critical.

What are the specifications of the HELI-COIL A3591-5CNW469 insert?

The HELI-COIL A3591-5CNW469 is a screw-locking tanged insert with 5/16"-24 fine threads, right-hand direction, and a tensile strength of 200,000 to 250,000 psi. It is made of 18-8 stainless steel with a Dry Film Lubricant finish and requires an STI Tap Size of 5/16"-24 for installation in metal.

Where to buy HELI-COIL helical inserts in worldwide?

3G Electric supplies HELI-COIL helical inserts worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to deliver these 18-8 stainless steel screw-locking inserts to your facility. Contact us for availability and lead time on the A3591-5CNW469 or other thread sizes.

How to install a HELI-COIL tanged screw-locking insert?

To install a HELI-COIL tanged screw-locking insert, drill out the damaged thread to the specified size, tap the hole using the correct STI tap (5/16"-24 for this insert), then wind the insert into the tapped hole using a tang drive tool. Break off the tang after installation for a permanent, vibration-resistant 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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