Countersink drill bits are just one style of drill bits that have a unique job or requirement. A countersink is a conical hole cut into an object, or the cutter used to cut such a hole. A common usage 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.

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What type of Drill motors are Countersink Drill Bits used in?

Countersink drill bits can be used in many tools, such as pistol grip drills, drill presses, milling machines, lathes and others.

What is a Cross-hole countersink cutter?

A cross-hole countersink is a cone-shaped tool with a cutting edge provided by a hole that goes through the side of the cone. It has cutting or sharp edges that create a countersunk hole that the head of the screw seats into, making the head of the screw flush or lower than the material.

What is a Fluted countersink cutter?

A fluted countersink cutter is used to provide a heavy chamfer to the entrance to drill a hole. This may be required to allow the correct seating for a countersunk-head screw or to provide the lead in for a second machining operation such as tapping.

Are there different angles of countersink drill bits?

Countersunk drill bits are commonly found in 60, 82, 90, 100, 110 or 120-degree angles. 82 and 90 degree are the two most common. UTS standards often use an 82-degree angle, ISO uses a 90-degree as a standard and aerospace industry is typically 100-degree countersink.

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These are just some of the thousands of industrial supplies that Hi-Line salesmen carry on their trucks.  Every Hi-Line representative manages a territory, similar to a route sales system, where quality electrical and maintenance supplies are delivered directly to your bins. If you love industrial parts, working with people, and being your own boss, then contact Hi-Line at industrialsales@hi-line.com for a rewarding career in industrial sales.