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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

3G Electric supplies the HELI-COIL Helical Insert: Tanged Tang Style, a screw-locking tanged helical insert with a 5/16"-18 coarse thread size, 500 PK, and a tensile strength of 200,000 to 250,000 psi. Made from 18-8…

SKU 3G-OTH-528799

Also listed as: 35855CNW312S · 3585 5CNW312S

Brand
HELI-COIL
Item
Screw-Locking Tanged Helical Insert
Part Number
3585-5CNW312S
Category
Screw-Locking Tanged Helical Inserts
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

HELI-COIL
Manufacturer Part Number
3585-5CNW312S
Type
Screw-Locking, 500 PK
Tensile Strength
200,000 to 250,000 psi
Finish Type
Dry Film Lubricant
Thread Size
5/16"-18
Thread Type
Coarse
STI Tap Size
5/16"-18
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

3G Electric supplies the HELI-COIL Helical Insert: Tanged Tang Style, a screw-locking tanged helical insert with a 5/16"-18 coarse thread size, 500 PK, and a tensile strength of 200,000 to 250,000 psi. Made from 18-8 material with a dry film lubricant finish, this inch-system insert is compatible with metal and uses a right-hand thread direction. As a global industrial solutions provider, we interpret demand and deliver genuine parts across 14 departments, with specialist depth in combustion, pumps, and controls.

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, providing a strong, wear-resistant thread. The screw-locking feature resists vibration loosening. 3G Electric supplies this 5/16"-18 coarse thread insert, made from 18-8 stainless steel with 200,000 to 250,000 psi tensile strength, for industrial maintenance and production applications.

What are the specifications of the HELI-COIL 3585-5CNW312S insert?

The HELI-COIL 3585-5CNW312S is a tanged tang style, screw-locking helical insert with a 5/16"-18 coarse thread size, right-hand direction, and 18-8 material grade. It has a tensile strength of 200,000 to 250,000 psi, a dry film lubricant finish, and comes in a 500 PK. The STI tap size is 5/16"-18, and it is compatible with metal substrates.

Where to buy HELI-COIL helical inserts in worldwide?

3G Electric supplies HELI-COIL helical inserts worldwide, including the 3585-5CNW312S screw-locking tanged style. As a global industrial solutions provider, we handle full logistics and customs clearance to deliver genuine parts to your facility. Contact us for availability and lead time on this 5/16"-18 coarse thread insert in 500 PK quantities.

How to install a HELI-COIL tanged helical insert?

To install a HELI-COIL tanged helical insert, drill the hole to the specified STI tap size (5/16"-18 for this insert), tap the hole with the corresponding STI tap, then use a tang installation tool to wind the insert into the threaded hole. After installation, break off the tang with a punch. 3G Electric supplies the insert and can advise on tooling.

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
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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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