How do they install without tangs?
Here's where Tangless Coilthread Inserts stand out from all other helically-coiled inserts. Instead of a tang, these new inserts feature a unique, ramped driving notch on the inside diameter of the first coil on each end of the insert.
To drive the insert we developed on innovative installation tool with a patented, internal spring loadedpawl located at the tip of the tool's mandrel. During installation this hooked pawl locks into the insert Driving Notch and rotates the insert into the tapped hole, The pawl then retracts onto the mandrel to allow the tool back out of the installed insert.
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