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Your cart is empty.USA Made #2 X 4" Carbide Center Drill & Countersink Size 1 plain style with a 1/8" body diameter and 3/64" drill diameter. Solid carbide 60 degree center drill and countersinks are essential tools for achieving accurate hole preparation and machining operations in metalworking and manufacturing environments. Their combination design, precision cutting capabilities, durability, and versatility make them indispensable for professionals seeking high-quality results. Used for centering work ends, where the workpiece is to be revolved on machine centers, the 60 degree countersink angle fits all standard centers. A combined center drill is a tool that can both drill and countersink a hole in one operation. It can be used to create a tapered feature in the end of a part or stock to provide a secure contact point for a live or dead center. The straight pilot drill section starts the hole and provides clearance for the point of the center, so it does not contact the bottom of the hole. Ideal for chamfering or spot drilling.
Thomas L. Freier
Reviewed in the United States on October 9, 2024
I didn't realize these were so long. Could be useful for a special situation. On my first use, the tip snapped off in some copper. So any real steel would be out of the question. Also, due to the length, the bit doesn't turn true, there is a slight wobble mounted in my high end Jacob's chuck.
Jim Glass
Reviewed in the United States on December 1, 2023
I have not used it yet but sure it will be fine
LeoJMcDonnell
Reviewed in the United States on October 8, 2023
What I wanted
David LeVine
Reviewed in the United States on September 2, 2022
Center drills are always problematic, the desired speed in the center is much higher than the desired speed of the countersink. Because of this, these can be easily broken. Even as long as these are, they are quite rigid and will cut well on center, either starting a drill hole or a centering hole for a lathe. These are sharp and nicely finished. I do not have the metrology tools to determine concentricity, but they do not appear to be off center. I got these to use on a jig to drill holes through rods, and they work well for me.
Dave Miller
Reviewed in the United States on February 24, 2022
Good price!
DPeter2101
Reviewed in the United States on January 18, 2022
Worked great and seems to be good quality for the price.
Paul Anthony Dean
Reviewed in the United States on May 31, 2021
Cheap cheap cheap metal. First time I used it on mild steel with light pressure, the tip snapped off rendering it useless and then flip it over and the other end did the same
Nathan
Reviewed in the United States on December 28, 2018
This thing is sharp and having it double ended is great. I use this on plastic and it cuts like butter. Don't use your bare finger to brush off debris, you will cut your finger. Do not poke yourself in the eye with this. It will hurt. Works great.
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