Thread: Countersink selection
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Ned Simmons
 
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Default Countersink selection
In article ,
what says...
I'd like to replace a burned up countersink. What angle is most useful
for general work? 6-flute cobalt sound good?



82 degrees for UN flat heads, 90 degrees for metric. I prefer the Ford
type single flute c'sinks for general use.

http://www.maford.com/taf/catalog.taf?category=a11

Ned Simmons
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