УПОРНЫЙ МЕТЧИК Caterpillar 4C4979

The Bottoming Tap forms internal threads in pre-drilled holes where threading must extend close to the bottom surface. It is used after initial threading operations to continue thread cutting deeper into the hole where standard taps cannot reach. The cutting edges engage with the internal surface of the hole and remove material in a controlled manner to generate thread profiles. It operates by rotating within the hole while advancing axially, allowing the cutting flutes to progressively shape the internal threads. Attributes:• Engages cutting edges with an internal hole surface.• Allows gradual material removal during thread formation.• Enables threading completion within blind hole geometry.Applications: The Bottoming Tap creates internal threads near the bottom of blind holes to allow full engagement of fasteners within a limited depth during threaded fastening operations.