We ship to the Philippines — door-to-door, customs and logistics handled by 3G Electric

HELI-COIL Screw-Locking Tanged Helical Insert, 5/16"-24, Plain, 100 PK - Screw-Locking Tanged Helical Inserts
HELI-COILScrew-Locking Tanged Helical Inserts

HELI-COIL Screw-Locking Tanged Helical Insert, 5/16"-24, Plain, 100 PK

3G Electric supplies the HELI-COIL Helical Insert, a tanged tang-style screw-locking insert in a plain finish. This 100-piece pack features a 5/16"-24 fine thread, right-hand direction, and a tensile strength of…

SKU 3G-OTH-528851

Also listed as: A35915EN469 · A3591 5EN469

Brand
HELI-COIL
Item
Screw-Locking Tanged Helical Insert, 5/16"-24, Plain, 100 PK
Category
Screw-Locking Tanged Helical Inserts
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

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
A3591-5EN469
Type
Screw-Locking, Plain, 100 PK
Tensile Strength
200,000 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
Nitronic 60
System of Measurement
Inch

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

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

Product Description

3G Electric supplies the HELI-COIL Helical Insert, a tanged tang-style screw-locking insert in a plain finish. This 100-piece pack features a 5/16"-24 fine thread, right-hand direction, and a tensile strength of 200,000 psi, made from Nitronic 60 material for metal compatibility.

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. This screw-locking tanged tang style prevents loosening under vibration, making it ideal for automotive, aerospace, and industrial maintenance applications where thread integrity is critical.

What are the specifications of the HELI-COIL A3591-5EN469 insert?

This HELI-COIL insert has a 5/16"-24 fine thread, right-hand direction, and a tensile strength of 200,000 psi. It is made from Nitronic 60 material, plain finish, and comes in a 100-piece pack. The STI tap size is 5/16"-24, and it is compatible with metal substrates.

Where to buy HELI-COIL helical inserts in worldwide?

3G Electric supplies HELI-COIL helical inserts worldwide. We handle full logistics, customs clearance, and delivery to your facility. As a global industrial sourcing partner, we provide genuine HELI-COIL parts like the A3591-5EN469 without requiring a local distributor.

How to install a tanged tang-style helical insert?

Install a tanged tang-style helical insert by first drilling and tapping the hole to the specified STI tap size (5/16"-24). Use a tang break-off tool after insertion to remove the tang. Ensure the insert is fully seated below the surface for proper thread locking and load distribution.

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.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

More from HELI-COIL

View all HELI-COIL parts
Screw-locking tanged helical insert for #2-56 coarse threads, made from 18-8 stainless steel with a tensile strength of 200,000 to 250,000 psi. Requires an STI tap size of #2-56 and is compatible with metal substrates. Used to repair or reinforce threads in metal assemblies, providing resistance to loosening under vibration
HELI-COIL
Screw-locking tanged helical insert for #2-56 coarse threads, made from 18-8 stainless steel with a tensile strength of 200,000 to 250,000 psi. Requires an STI tap size of #2-56 and is compatible with metal substrates. Used to repair or reinforce threads in metal assemblies, providing resistance to loosening under vibration
18-8 stainless steel helical insert with dry film lubricant finish. Fine thread, right-hand direction, tensile strength 200,000 to 250,000 psi. Requires STI tap size 5/16"-24 for installation in metal. Used to repair or reinforce internal threads, with screw-locking feature to resist loosening under vibration
HELI-COIL
18-8 stainless steel helical insert with dry film lubricant finish. Fine thread, right-hand direction, tensile strength 200,000 to 250,000 psi. Requires STI tap size 5/16"-24 for installation in metal. Used to repair or reinforce internal threads, with screw-locking feature to resist loosening under vibration
Screw-locking tanged helical insert for repairing or reinforcing tapped threads in metal. Features 1/4"-20 coarse thread, right-hand direction, plain finish, and 18-8 material with tensile strength of 200,000 to 250,000 psi. Supplied in a 1,000-pack. Suitable for applications requiring secure threaded fasteners in metal assemblies
HELI-COIL
Screw-locking tanged helical insert for repairing or reinforcing tapped threads in metal. Features 1/4"-20 coarse thread, right-hand direction, plain finish, and 18-8 material with tensile strength of 200,000 to 250,000 psi. Supplied in a 1,000-pack. Suitable for applications requiring secure threaded fasteners in metal assemblies
18-8 stainless steel helical insert with dry film lubricant finish. Right-hand fine threads, tensile strength 200,000 to 250,000 psi. Used to repair or reinforce tapped threads in metal, providing a locking thread that resists loosening under vibration. Requires STI tap size 5/16"-24 for installation
HELI-COIL
18-8 stainless steel helical insert with dry film lubricant finish. Right-hand fine threads, tensile strength 200,000 to 250,000 psi. Used to repair or reinforce tapped threads in metal, providing a locking thread that resists loosening under vibration. Requires STI tap size 5/16"-24 for installation
This tanged helical insert provides a screw-locking feature for threaded holes in metal substrates. With a 1"-8 coarse thread and 1 in overall length, it is made from 18-8 material with a tensile strength of 200,000 to 250,000 psi. Suitable for repairing or reinforcing tapped threads in applications such as engine blocks and industrial machinery
HELI-COIL
This tanged helical insert provides a screw-locking feature for threaded holes in metal substrates. With a 1"-8 coarse thread and 1 in overall length, it is made from 18-8 material with a tensile strength of 200,000 to 250,000 psi. Suitable for repairing or reinforcing tapped threads in applications such as engine blocks and industrial machinery
Screw-locking tanged helical insert for repairing or reinforcing threads in metal components. Made from 18-8 stainless steel with a dry film lubricant finish. Features M2.5-0.45 metric coarse thread, right-hand direction, and tensile strength of 200,000 to 250,000 psi. Supplied in a 100-piece pack
HELI-COIL
Screw-locking tanged helical insert for repairing or reinforcing threads in metal components. Made from 18-8 stainless steel with a dry film lubricant finish. Features M2.5-0.45 metric coarse thread, right-hand direction, and tensile strength of 200,000 to 250,000 psi. Supplied in a 100-piece pack
18-8 stainless steel helical insert with screw-locking feature to resist loosening under vibration. Tanged tang style for installation. Requires 4.2mm drill bit and M4-0.70 STI tap. Tensile strength 200,000 to 250,000 psi. Used to repair or reinforce threads in metal substrates
HELI-COIL
18-8 stainless steel helical insert with screw-locking feature to resist loosening under vibration. Tanged tang style for installation. Requires 4.2mm drill bit and M4-0.70 STI tap. Tensile strength 200,000 to 250,000 psi. Used to repair or reinforce threads in metal substrates
18-8 stainless steel helical insert with dry film lubricant finish, fine #10-32 threads, and tensile strength of 200,000 to 250,000 psi. Right-hand thread design for metal thread repair or reinforcement. Requires STI tap size #10-32. Pack of 100
HELI-COIL
18-8 stainless steel helical insert with dry film lubricant finish, fine #10-32 threads, and tensile strength of 200,000 to 250,000 psi. Right-hand thread design for metal thread repair or reinforcement. Requires STI tap size #10-32. Pack of 100