Description

High Speed Steel Countersink.

A countersink is a conical hole cut into a manufactured object. The same term is used for the cutter used to cut such a hole.

90° HSS Industrial Quality Countersink.

• The five flute rose pattern design has been a principle countersink design for over 100 years. The odd number of flutes reduces chatter on steel, brass and aluminium. Also used for plastic and wood application.
• A common use is to allow the head of a countersunk bolt or screw, when placed in the hole, to sit flush with or below the surface of the surrounding material. A countersink may also be used to remove the burr left from a drilling or tapping operation thereby improving the finish of the product and removing any hazardous sharp edges.
• Regardless of the name given to the cutter, the surface being generated may be a conical chamfer (plunging applications) or a beveled corner for the intersection of two planes (traversing applications).