The Role of Counterbore Holes in Precision Machining

Can a Curved Slot Be Placed by GD&T Like This? counterbore slot callout How to draw and dimension a counterbore using AutoCAD counterbore slot callout Counterbored Holes—One Position Tolerance A single position tolerance feature control frame may be placed next to the hole and counterbore callout to indicate

letter slot for door 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