Center drill with 82 degree angle

[Pete301]

I have a #3 center drill ( not a spotting drill, pilot drill, twist drill) and both the package and the drill say 82 degrees. What would this be for? Can it be used with a regular lathe center of 60 degrees?

 

[mmcmdl]

What would this be for? Can it be used with a regular lathe center of 60 degrees?

It's used for a pilot and countersink , not for a 60 degree center .

 

[toprecyler]

82 degrees is the angle for Sae / inch flat head screws.

Metric flat head screws are 90 degrees.

So that tool may drill and countersink in one operation for a certain screw size, in thin enough material for the pilot hole to go thru.
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[RandyM]

Counter sunk flathead inch fasters use an 82 degree angle. This is an all in one drill and counter sink tool. I would not recommend using it as a center drill. Metric fasteners us 90 degree angles.

 

[Pete301]

Guess I always mistakenly thought the shape of the center drill was telling me that it was a center drill for a lathe. I’ll have to check the rest of my “center drills” Doubt they all say the angle on them. Dang.

 

[mmcmdl]

Doubt they all say the angle on them. Dang.

Being realistic , if you center drilled with this and used a live center , you most likely would've seen no issues .