Abstract: Described herein is a substrate fastener having resilient coupling members at the opposite ends of a strut member, characterized in that the coupling members are resiliently engageable in mounting holes of substrates to be fastened to each other, and at least one of the coupling members is connected to the strut member through a flexible hinge of a synthetic resin material. Accordingly, the fastener occupies only small areas on the substrates, permitting to mount electronic parts on the substrates in higher packaging density. The connected substrates can be freely turned into a horizontal or vertical position if desired.

Abstract: A plate holder adapted to be connected in a mounting hole formed in a mounting plate, in which two holding plates are erected on a base perpendicularly in spaced relation to each other, and outside the holding plates are provided elastic non-return pieces adapted to be elastically retained in the mounting hole of the mounting plate. Such construction permits the plate holder to be used even where there is not much space below a plate to be held, used also as a guide rail and facilitates inspection.