Comprehensive Guide to Counterbore Machining Techniques

Comprehensive Guide to Counterbore Machining Techniques counterbore slot callout Dimensioning a countersunk slot on a curved surface Kyle2 1 Mar 13 19:36 then tolerance the counterbore slots to datum D, counterbore slot The diameter and depth of the counterbore must be included in the hole callout The symbol for a counterborehole is D Depth is indicated by

counterbore slot First Creating the Thru Slot, then again to create the Counterbored Slot My frustration lies in that I cannot simply call out the Centerline

slot race car Counterbored Holes Dimensions METRIC SOCKET-HEAD CAP SCREWS SCREW DIA COUNTERBORE DIA COUNTERBORE DEPTH COUNTERSINK DIA CLEARANCE DIA  The callout symbol on a machining blueprint for a countersink hole is “⌵” and the callout symbol for a counterbore hole is “⌴” The symbols are designed to