HELI-COIL Helical Insert: Tangless Tang Style, Screw-Locking, 1/4"-28 Thread Size
The HELI-COIL Helical Insert is a screw-locking, tangless insert with a 1/4"-28 fine thread, plain finish, and 18-8 material grade. It offers a tensile strength of 200,000 to 250,000 psi, is compatible with metal…
SKU 3G-OTH-532454
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Product Description
The HELI-COIL Helical Insert is a screw-locking, tangless insert with a 1/4"-28 fine thread, plain finish, and 18-8 material grade. It offers a tensile strength of 200,000 to 250,000 psi, is compatible with metal, and comes in a 100-pack. 3G Electric interprets demand for such precision fasteners across 14 industrial departments, with specialist depth in combustion, pumps, and controls as an authorised distributor.
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 tangless helical insert used for?
A HELI-COIL tangless helical insert repairs or reinforces tapped threads in metal, providing a durable, screw-locking thread. It is used across industrial maintenance, machining, and assembly applications. 3G Electric supplies these precision fasteners globally, supporting 14 industrial departments with specialist expertise in combustion, pumps, and controls.
What are the specifications of the HELI-COIL AT3591-4C250 insert?
The HELI-COIL AT3591-4C250 is a screw-locking, tangless insert with a 1/4"-28 fine thread, plain finish, and 18-8 material grade. It has a tensile strength of 200,000 to 250,000 psi, is compatible with metal, and comes in a 100-pack. Thread direction is right hand, and STI tap size is 1/4"-28.
Where to buy HELI-COIL helical inserts in worldwide?
3G Electric supplies HELI-COIL helical inserts worldwide, handling full logistics and customs clearance. As a global industrial solutions provider, we source and deliver genuine parts like the AT3591-4C250 to any location. Contact us for availability and lead time on your order.
How to install a tangless helical insert?
To install a tangless helical insert, drill and tap the hole to the specified STI tap size (1/4"-28 for this insert). Use a tangless installation tool to wind the insert into the tapped hole until it sits slightly below the surface. No tang removal is needed, simplifying installation. Always follow the manufacturer's instructions for best results.
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Common applications for HELI-COILHELI-COIL Products
3G Electric supplies HELI-COIL screw-locking tangless helical inserts. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
