Dowel

дюбел

djubel

(something fitted into a surface to let other pieces be fastened to it)

клин

klin

(piece of wood fitted into a surface)

шпилка

špilka

(a pin fitting into holes, partly in one piece and partly in the other to keep them in their position)

щифт

štift

(a pin fitting into holes, partly in one piece and partly in the other to keep them in their position)