To provide a spacer for printed boards by which need for using screws is eliminated, one component can function as a spacer, workability for assembly is improved, simultaneous detaching/attaching of two points is possible, and electrical continuity is improved.

A spacer is comprised of bent parts 1c and 2c which are formed by working an metal sheet having property of spring and a spacer part 1b. The spacer is inserted in holes of circuit boards 1a and 2a by sandwiching them vertically or horizontally. The spacer part 1b can be detached from the boards 1a and 2a by pulling out vertically or horizontally. Further, a spacer to be sandwiched horizontally can be simultaneously detached/attached at two points. Also, electrical continuity is improved by providing additional bended parts on the bended parts.