260
Exploring Drafting
∅.50
∅1.12 X 90°
∅.50
∅1.0 .06
Countersink size
∅.50
∅1.0 .62
Depth
symbol
Spotface symbol Counterbore symbol
Countersunk Hole Spotfaced Hole Counterbored Hole
SF
Countersink symbol
Goodheart-Willcox Publisher
Figure 10-21. Symbols and notes used to identify countersunk, spotfaced, and counterbored holes.
Goodheart-Willcox Publisher
Figure 10-22. Multiview drawings of hole features for manufacturing processes.
Copyright Goodheart-Willcox Co., Inc.