УПОРНЫЙ МЕТЧИК Caterpillar 4C4980

The Bottoming Tap forms internal threads inside pre-drilled holes where full thread depth is required close to the hole bottom. It operates by cutting thread profiles into the inner surface as it is rotated into the hole, following an initial threading process performed by taper and intermediate taps. The reduced lead at the tip allows the cutting edges to engage almost immediately with the hole base, enabling thread formation up to the end of the drilled depth. The cutting action removes material in a controlled pattern to create uniform thread geometry that matches corresponding fasteners.Attributes:• Extends partially formed threads to full depth.• Cuts internal threads within pre-drilled holes.• Forms threads close to the hole's bottom surface.Applications: The Bottoming Tap cuts and completes internal threads to full depth inside pre-drilled holes, enabling secure engagement of threaded fasteners in blind hole applications with limited bottom clearance.