GD&T of a counterbored slot - Eng-Tips

A spotface symbol is similar to the counterbore symbol, with the addition of the letters “SF The spotface callout indicates a spotface

Counterbored holes are dimensioned in the sequence of their manufacture First the hole's diameter is given, then the counterbore diameter, then

counterbore slot How to draw and dimension a counterbore using AutoCAD

slot cutting drill bit Slot length on the holeslot symbol or machine hole callout Shown here Hole information for a counterbore hole is shown on a miscellaneous member detail