Features:Expansion bolt made of 304 stainless steel , comes with washer and nut, corrosion resistance, long life span. Expansion is created by tightening a threaded bolt which draws a tapered cone expanding a sleeve against the walls of the hole. External Hex Expansion Bolt is widely used in fences, security doors and windows, canopies, home decoration, engineering and so on. How to installation: Put the expansion screw into the ground or the hole on the wall and then tighten the nuts of the expansion bolt with wrench. The bolt goes outside while the metal sheath does not move. Thus the bigger head of the bolt will expand the metal sheath, making it fill the whole hole. Package Included : 1 x M6 x 60mm Expansion bolt 1 x M6 x 70mm Expansion bolt 1 x M6 x 80mm Expansion bolt
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