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HELI-COIL Helical Insert: Tanged Tang Style, Screw-Locking, #4-40 Thread Size, Plain - Screw-Locking Tanged Helical Inserts
HELI-COILScrew-Locking Tanged Helical Inserts

HELI-COIL Helical Insert: Tanged Tang Style, Screw-Locking, #4-40 Thread Size, Plain

The HELI-COIL Helical Insert is a tanged tang style, screw-locking insert with #4-40 thread size, plain finish, and 18-8 material grade. It has a tensile strength of 200,000 to 250,000 psi, right-hand thread…

SKU 3G-OTH-529000

Brand
HELI-COIL
Item
Helical Insert: Tanged Tang Style, Screw-Locking, #4-40 Thread Size, Plain
Category
Screw-Locking Tanged Helical Inserts
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Technical Specifications

HELI-COIL
Manufacturer Part Number
3585-04CN168S
Type
Screw-Locking, #4-40 Thread Size, Plain, 1,000 PK
Tensile Strength
200,000 to 250,000 psi
Finish Type
Plain
Thread Type
Coarse
STI Tap Size
#4-40
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 #4-40 thread size, plain finish, and 18-8 material grade. It has a tensile strength of 200,000 to 250,000 psi, right-hand thread direction, and is compatible with metal. Supplied in a 1,000 PK, this inch-system insert uses a coarse thread type and requires an STI tap size of #4-40.

Frequently Asked Questions

What is a HELI-COIL helical insert used for?

A HELI-COIL helical insert repairs or strengthens threads in metal. This screw-locking tanged tang style, #4-40 thread size, plain finish insert provides a durable 18-8 stainless steel thread with 200,000 to 250,000 psi tensile strength, ideal for industrial applications requiring reliable thread reinforcement.

What are the specifications of the HELI-COIL 3585-04CN168S insert?

This HELI-COIL insert has a #4-40 thread size, coarse thread type, right-hand thread direction, and 18-8 material grade. It features a screw-locking tanged tang style, plain finish, and tensile strength of 200,000 to 250,000 psi. It requires an STI tap size of #4-40 and is compatible with 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 for delivery to your location. Contact us to source this #4-40 screw-locking tanged tang insert, part number 3585-04CN168S, for your thread repair needs.

How to install a HELI-COIL tanged tang insert?

To install a HELI-COIL tanged tang insert, drill to the specified size, tap with the correct STI tap (here #4-40), then use a tang insertion tool to wind the insert into the tapped hole. After installation, break off the tang with a punch. Always follow the manufacturer's instructions for best results.

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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