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 Nitronic 60 with a tensile strength of 200,000 psi, it is compatible with…
SKU 3G-OTH-529009
Need installation or engineering help?
Ask a question
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 Nitronic 60 with a tensile strength of 200,000 psi, it is compatible with metal substrates and uses a right-hand thread direction. 3G Electric interprets this demand and sources the genuine HELI-COIL part (MPN A3585-04EN112) across our 14 industrial departments, with specialist depth in combustion, pumps and controls as an authorised distributor.
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, cast iron, or steel. It is ideal for aerospace, automotive, and industrial maintenance applications where thread integrity is critical.
What are the specifications of the HELI-COIL A3585-04EN112 insert?
This HELI-COIL insert has a #4-40 thread size, coarse thread type, and right-hand direction. It is made from Nitronic 60 with a tensile strength of 200,000 psi. The insert is plain finish, screw-locking, and comes in a 100-piece pack. It requires an STI tap size of #4-40 and is compatible with metal substrates.
Where to buy HELI-COIL helical inserts worldwide?
3G Electric supplies genuine HELI-COIL helical inserts, including the A3585-04EN112, to customers worldwide. We handle full logistics, customs clearance, and delivery for global orders. As a sourcing partner across 14 industrial departments, we interpret your demand and provide the correct HELI-COIL part for your application.
How to install a HELI-COIL tanged helical insert?
To install a HELI-COIL tanged insert, drill out the damaged thread to the specified size, tap the hole using the correct STI tap (here #4-40), then use a tang-style installation 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-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.









