Counter Sink

Specializing in G-10 and Phenolic machining

A countersunk hole is simply a normal right cylindrical through-hole with an additional right conical section removed on the top. The cone angle is typically 82 or 100 degrees.Countersinking is creating a tapered hole drilled with a wide outer portion. This is done to allow the head of a countersunk bolt or screw to site square with its surroundings when placed in the hole..

31 diameter to 1.25 diameter+/-
0.005 tolerance
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