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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 with a 5/16"-24 fine thread, right-hand direction, and a tensile strength of 200,000 to 250,000 psi. Supplied in a 500-piece pack, this 18-8…

SKU 3G-OTH-529034

Brand
HELI-COIL
Item
Helical Insert: Tanged Tang Style, Screw-Locking, 5/16"-24 Thread Size
Category
Screw-Locking Tanged Helical Inserts
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Technical Specifications

HELI-COIL
Manufacturer Part Number
3591-5CNW469S
Type
Screw-Locking, 500 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
View Full Spec Sheet

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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 with a 5/16"-24 fine thread, right-hand direction, and a tensile strength of 200,000 to 250,000 psi. Supplied in a 500-piece pack, this 18-8 stainless steel insert features a dry film lubricant finish and is compatible with metal substrates, requiring an STI tap size of 5/16"-24 for installation.

Frequently Asked Questions

What is a HELI-COIL helical insert used for?

A HELI-COIL helical insert repairs or reinforces tapped threads in metal. The screw-locking version resists vibration loosening. It is ideal for automotive, aerospace, and industrial maintenance where a strong, reusable 5/16"-24 fine thread is needed in aluminum or steel.

What are the specifications of the HELI-COIL 3591-5CNW469S insert?

This HELI-COIL insert has a 5/16"-24 fine thread, 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. The STI tap size is 5/16"-24, and it comes in a 500-piece pack.

Where to buy HELI-COIL helical inserts in worldwide?

3G Electric supplies HELI-COIL helical inserts worldwide. As a global industrial sourcing partner, we handle logistics, customs clearance, and delivery to your facility. Contact us for availability and lead time on the 3591-5CNW469S 500-pack screw-locking insert.

How to install a HELI-COIL tanged helical insert?

Install a HELI-COIL tanged insert by drilling to the specified hole size, tapping with the correct STI tap (5/16"-24 for this model), then winding the insert onto the installation tool until it is below the surface. Break off the tang with a punch. Use a thread-locking compound for added security.

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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HELI-COIL Helical Insert: Tanged Tang Style, Screw-Locking, #8-32 Thread Size, 1,000 PK (MPN 3585-2CNW328S). 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: Tanged Tang Style, Screw-Locking, #10-32 Thread Size, 100 PK (MPN A3591-3CNW190). Key specifications — Material Grade/Class: 18-8; Thread Direction: Right Hand; STI Tap Size: #10-32; Compatible Material: Metal; System of Measurement: Inch; Brand: HELI-COIL; Tensile Strength: 200,000 to 250,000 psi; Thread Type: Fine.
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HELI-COIL Helical Insert: Tanged Tang Style, Screw-Locking, #10-32 Thread Size, 100 PK (MPN A3591-3CNW190). Key specifications — Material Grade/Class: 18-8; Thread Direction: Right Hand; STI Tap Size: #10-32; Compatible Material: Metal; System of Measurement: Inch; Brand: HELI-COIL; Tensile Strength: 200,000 to 250,000 psi; Thread Type: Fine.
HELI-COIL Helical Insert: Tanged Tang Style, Screw-Locking, #6-32 Thread Size, Plain, 1,000 PK (MPN 3585-06CN138S). Key specifications — Material Grade/Class: 18-8; Thread Direction: Right Hand; STI Tap Size: #6-32; 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: Tanged Tang Style, Screw-Locking, #6-32 Thread Size, Plain, 1,000 PK (MPN 3585-06CN138S). Key specifications — Material Grade/Class: 18-8; Thread Direction: Right Hand; STI Tap Size: #6-32; 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: Tanged Tang Style, Screw-Locking, M3-0.50 Thread Size, Plain, 1,000 PK (MPN 4184-3CN045S). Key specifications — Material Grade/Class: 18-8; Thread Direction: Right Hand; STI Tap Size: M3-0.50; Compatible Material: Metal; System of Measurement: Metric; Brand: HELI-COIL; Drill Bit Size: 3.15mm; Tensile Strength: 200,000 to 250,000 psi.
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HELI-COIL Helical Insert: Tanged Tang Style, Screw-Locking, M3-0.50 Thread Size, Plain, 1,000 PK (MPN 4184-3CN045S). Key specifications — Material Grade/Class: 18-8; Thread Direction: Right Hand; STI Tap Size: M3-0.50; Compatible Material: Metal; System of Measurement: Metric; Brand: HELI-COIL; Drill Bit Size: 3.15mm; Tensile Strength: 200,000 to 250,000 psi.
HELI-COIL Helical Insert: Tanged Tang Style, Screw-Locking, 3/8"-16 Thread Size, Plain, 100 PK (MPN A3585-6CN562). Key specifications — Material Grade/Class: 18-8; Thread Direction: Right Hand; STI Tap Size: 3/8"-16; 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: Tanged Tang Style, Screw-Locking, 3/8"-16 Thread Size, Plain, 100 PK (MPN A3585-6CN562). Key specifications — Material Grade/Class: 18-8; Thread Direction: Right Hand; STI Tap Size: 3/8"-16; 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: Tanged Tang Style, Screw-Locking, M16-2.00 Thread Size, Plain, 100 PK (MPN A4184-16CN240). Key specifications — Material Grade/Class: 18-8; Thread Direction: Right Hand; STI Tap Size: M16-2.00; Compatible Material: Metal; System of Measurement: Metric; Brand: HELI-COIL; Drill Bit Size: 16.5mm; Tensile Strength: 200,000 to 250,000 psi.
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HELI-COIL Helical Insert: Tanged Tang Style, Screw-Locking, #10-32 Thread Size, Plain, 1,000 PK (MPN 3591-3CN380S). Key specifications — Material Grade/Class: 18-8; Thread Direction: Right Hand; STI Tap Size: #10-32; Compatible Material: Metal; System of Measurement: Inch; Brand: HELI-COIL; Tensile Strength: 200,000 to 250,000 psi; Thread Type: Fine.
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