This is a rounded exterior blend between surfaces:
When a curved surface intersects a plane surface, an edge is formed.
This is a conical-shaped recess around a hole, often used to receive a tapered screw head:
A fillet is a rounded exterior blend between surfaces.
If a plane intersects a contoured surface, no line is drawn to represent the edge.
It is not always possible to show all of the drawing views in alignment on a sheet.
This is an angled surface used on cylinders to make them easier to handle:
Knurl is a pattern form on a surface to provide for better gripping or more surface area for attachment.
Right-hand and left-hand parts are mirror images and are made to be interchangeable.
A boss is a short raised protrusion above the surface of a part.
These are used to attach parts to a cylinder so they won't turn on it:
A counterbore is a cylindrical recess around a hole, usually to receive a bolt head or nut.
A keyway is a small groove cut around the diameter of a cylinder, often where it changes diameter.
This is a flat or rounded tab protruding from a surface, usually to provide a method for attachment:
Simplified conventional representations that deviate from true orthographic projection may be used to enhance economy and clarity in a drawing.
A plane surface cannot intersect or be tangent to a contoured surface.
This is a hollow cylinder that is often used as a protective sleeve or guide or as a bearing:
A lug is a flattened collar or rim around a cylindrical part to allow for attachment.
Small curves called runouts are used to represent fillets that connect with plane surfaces tangent to cylinders.
Please disable the adBlock and continue. Thank you.