Anker AN 217 M20x280 zinc

Expansion anchor a type of fasteners that has a detachable principle of operation. During installation, the expansion elements are opened and pressed against the walls of the hole. The weight of the structure held by the fastener affects the anchor, and the stronger this effect, the more decompression occurs, and accordingly, the stronger the structure is held.

Scope used for responsible installation; is mounted only in concrete and solid stone; material: galvanized steel, hot-dip galvanizing steel, stainless steel; the diameter of the hole in the base in which it is mounted and the diameter of the hole in the material to be fixed - must be clearly equal to the diameter of the anchor; withstands heavy loads on the break and cut; some manufacturers may have this type of anchor modified for installation in a stretched area of ​​concrete, and for dynamic loads.

It is used for fastening of columns and support; fastening of the equipment in shop premises; fastening of racking systems; in elevator shafts and for lifting equipment; fastening of facade systems and other metal structures.

Material stainless steel. 

Coating Zinc (Plated) protects against corrosion if you plan to use fasteners in aggressive conditions.