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> 3/16" drill countersink x 1/2" diameter 82°
3/16" drill countersink x 1/2" diameter 82°
These are 3/16" I.D. X 1/2" counter bore O.D. 82 countersinks. Model #W0905 part# 0187-050-082 High Speed (HSS) countersinks. Manufactured in the USA by Vernon Devices inc.Similar to a fuller countersink Part # C92 0r # H92S in this case for HSS. These are not your typical carbon steel countersinks...These are production quality High Speed Steel tools with a ground radial relief cutting edge, far superior to the average hardware store bought countersink.Mounts on a standard or taper drill bit. Easily convert your drill into a combined drill and countersink.
