The inlet counterbore and the outlet flange counterbore separate the inner and outer shells.

The shaft forms an interference fit with the bore and is adhered to the counterbore.

The inner shell and the outer shell are inserted into the counterbore of the outlet flange.

The counterbore is formed to maintain a sufficient gap between the nut and the protruding end of a fastener sleeve (130).

The compound sample needle also includes a flexible tubing having an outer surface and a coupling end disposed in the counterbore of the rigid needle.

The nut with the counterbore improves the conductive fastener system such that the need for a solid copper grid and a cap seal is reduced or eliminated.

The counterbore has an outer-circumference region, on which the single-crystal substrate is supported in abutment, and a central region enclosed by the outer-circumference region and having no contact with the single-crystal substrate.

With the use of bone screws (104) or otherwise, the hole caps cover holes in implants to prevent the flow of unwanted debris into the counter-bored hole and into the underlying bone matter.

This deformation can be towards an axis of the nozzle or alternatively this deformation can subsequently direct the tip of the periphery outwards at its extremity such that flow into the counterbore is smooth.

Each drilling head has its own automatic tool changer with five tools suitable for HSS drills, carbide tipped drills, thread tapping, counter sinking, layout marking and centre point marking.

The second counterbore is arranged to oppose the first counterbore.

The inlet counterbore and the outlet flange counterbore separate the inner and outer shells.

The sleeve is inserted into the second counterbore and extends to insert into the first counterbore.

Additionally, the first hole has a first counterbore.

The housing also includes a counter bore having an internal thread.