A shallow V shape, calling for a conical widening at a hole's mouth.
Also known as: V shape drawing symbol, Chamfered hole symbol
A shallow V calls for a countersink: a conical widening so a tapered screw head sits flush. Like the counterbore symbol it is a picture of the hole in section.
Calls for a conical widening at the mouth of a hole so a tapered screw head sits flush with or below the surface.
Contexts: Technical drawing
Is followed by an included angle as well as a diameter, since a countersink is defined by both and a wrong angle leaves the head proud.
Contexts: Technical drawing
Two short strokes meeting at a shallow angle at the bottom, forming a wide V open at the top.
Flat bottom against angled bottom.