Arrangement comprising a first scaffold component and a second scaffold component, - wherein the first scaffold component comprises a carrier, a connection head and a wedge, - wherein the connection head comprises an upper head part with an upper wedge channel and a lower head part with a lower wedge channel, - wherein a receiving slot extending in the direction of a longitudinal axis of the carrier is formed between the upper head part and the lower head part, - wherein the wedge channels (106, 108) extend perpendicularly to the longitudinal axis of the carrier in the direction of a vertical axis and in each case open out into the receiving slot, - wherein the second scaffold component comprises a scaffolding tube and a projection, wherein the projection extends transversely to a longitudinal axis of the scaffolding tube away therefrom and has at least one opening (205a, 205b), - wherein, with the scaffold components (101, 201) connected, the connection head is plugged onto the projection such that a releasable connection is formed and the wedge is plugged through the upper wedge channel, through one of the openings (205a, 205b) of the projection and through the lower wedge channel, - wherein the receiving slot has a top formed by the upper head part, a base formed by the lower head part and a wall formed by the connection head between the upper head part and the lower head part, and - wherein the receiving slot opens towards an end face of the connection head that faces away from the carrier, - wherein the top is in the form of a flat bearing surface, - and wherein the base rises towards the wall, characterized in that a rise of the base is formed in a stepped manner, and, by way of a step which comprises an inclined end face, this transitions from a lower part-surface of the base into an upper part-surface of the base, - wherein, correspondingly, a height of the receiving slot, as seen in the direction of the carrier, decreases from a first height (H111a) in the region of the lower part-surface to a second height (h111b) in the region of the upper part-surface, - wherein, in relation to a thickness of a perforated disc which forms the projection, the second height (h111b) is at most 1.3 times the thickness and the first height (h111a) is at most 1.4 times the thickness. - wherein the first scaffold component comprises a carrier, a connection head and a wedge, - wherein the connection head comprises an upper head part with an upper wedge channel and a lower head part with a lower wedge channel, - wherein a receiving slot extending in the direction of a longitudinal axis of the carrier is formed between the upper head part and the lower head part, - wherein the wedge channels (106, 108) extend perpendicularly to the longitudinal axis of the carrier in the direction of a vertical axis and in each case open out into the receiving slot, - wherein the second scaffold component comprises a scaffolding tube and a projection, wherein the projection extends transversely to a longitudinal axis of the scaffolding tube away therefrom and has at least one opening (205a, 205b), - wherein, with the scaffold components (101, 201) connected, the connection head is plugged onto the projection such that a releasable connection is formed and the wedge is plugged through the upper wedge channel, through one of the openings (205a, 205b) of the projection and through the lower wedge channel, - wherein the receiving slot has a top formed by the upper head part, a base formed by the lower head part and a wall formed by the connection head between the upper head part and the lower head part, and - wherein the receiving slot opens towards an end face of the connection head that faces away from the carrier, - wherein the top is in the form of a flat bearing surface, - and wherein the base rises towards the wall, - wherein, correspondingly, a height of the receiving slot, as seen in the direction of the carrier, decreases from a first height (H111a) in the region of the lower part-surface to a second height (h111b) in the region of the upper part-surface, - wherein, in relation to a thickness of a perforated disc which forms the projection, the second height (h111b) is at most 1.3 times the thickness and the first height (h111a) is at most 1.4 times the thickness.