Dimensioning, ContinuedSpot-facingSpot-facing (SF) holes produce a round spot or surface around the top ofanother hole typically at 1/16-inch depth. This is often done to provide abearing surface or to embed washers or t-nuts.Specify the spot-faced area.Identify the diameter of the spot-faced hole. Hole depth is often left to thediscretion of the worker, but -you may specify either the depth or remainingthickness of the material.Figure 3-34 is an example of a spot-faced hole.Figure 3-34.—Dimensioning spot-faced holes.Continued on next page3-38
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