HELI-COIL Installation Tool: Threaded Mandrel for Tangless Inserts, Helical Inserts
The HELI-COIL Threaded Mandrel for Tangless Inserts (MPN 7571-3B) is an inch-system installation tool designed for right-hand, coarse helical inserts. This steel tool is compatible with helical inserts and supports…
SKU 3G-OTH-530947
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Product Description
The HELI-COIL Threaded Mandrel for Tangless Inserts (MPN 7571-3B) is an inch-system installation tool designed for right-hand, coarse helical inserts. This steel tool is compatible with helical inserts and supports precise, reliable installation in industrial applications.
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 the HELI-COIL 7571-3B threaded mandrel used for?
The HELI-COIL 7571-3B threaded mandrel is used to install tangless helical inserts into pre-tapped holes. It ensures precise, reliable insertion of inch-system, right-hand, coarse-thread helical inserts in industrial applications such as engine blocks, hydraulic components, and machinery repairs.
What are the specifications of the HELI-COIL 7571-3B installation tool?
The HELI-COIL 7571-3B is a steel threaded mandrel for tangless inserts. It is designed for inch-system, right-hand, coarse helical inserts. The tool is compatible with helical inserts and is manufactured by HELI-COIL under part number 7571-3B.
Where to buy the HELI-COIL 7571-3B threaded mandrel worldwide?
3G Electric supplies the HELI-COIL 7571-3B threaded mandrel to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your facility. Contact us for availability and lead time on this installation tool.
How to install helical inserts with the HELI-COIL 7571-3B mandrel?
To install helical inserts with the HELI-COIL 7571-3B mandrel, first tap the hole to the correct inch-coarse thread size. Then, load the tangless insert onto the mandrel, align it with the hole, and turn the mandrel clockwise to drive the insert into place. Follow standard thread-insert installation practices for best results.
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Common applications for HELI-COILHELI-COIL Products
3G Electric supplies HELI-COIL installation tools for helical inserts. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.









