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 for #4-40 coarse threads, supplied in a 100-piece pack. Made from 18-8 stainless steel with a plain finish, it delivers a tensile strength of…
SKU 3G-OTH-529002
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Product Description
The HELI-COIL Helical Insert is a tanged tang-style, screw-locking insert for #4-40 coarse threads, supplied in a 100-piece pack. Made from 18-8 stainless steel with a plain finish, it delivers a tensile strength of 200,000 to 250,000 psi and is compatible with metal substrates. This inch-system insert uses a right-hand thread direction and requires an STI tap size of #4-40.
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 internal threads in metal. This screw-locking, tanged tang-style insert for #4-40 coarse threads provides a strong, wear-resistant thread in aluminum or steel components, preventing stripping and extending part life.
What are the specifications of the HELI-COIL A3585-04CN168 insert?
This HELI-COIL insert has a #4-40 thread size, coarse thread type, and right-hand direction. It is made from 18-8 stainless steel with a plain finish, offering a tensile strength of 200,000 to 250,000 psi. It requires an STI tap size of #4-40 and comes in a 100-piece pack.
Where to buy HELI-COIL helical inserts worldwide?
3G Electric supplies HELI-COIL helical inserts worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to deliver this #4-40 screw-locking insert to your facility. Contact us for pricing and lead time on this 100-pack item.
How to install a tanged tang-style helical insert?
To install a tanged tang-style helical insert, drill and tap the hole to the specified STI tap size (here #4-40). Use a tang break-off tool to insert the coil, then break off the tang after installation. Ensure the insert is flush with the surface for proper thread locking.
Used in
Common applications for HELI-COILHELI-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.









