Boom assembly on hanging post or profile, in order to prevent the deformation of the hanging post profile when assembling the boom, the hanging post spacer profile with hexagon screw must be taken into account for static reasons, when attaching the boom to the hanging post profile on one side, the closed side of the boom should preferably be aligned with the profile web of the hanging post, including proportional fastening accessories SKM 10X90 E3 and two body washers UGM 10 E3. for hanging post: HU 5050/... Material: stainless steel, material no. 1.4301, 1.4303