ITEM NAME:M6x40mm Repair Part Hex Head Sleeve Expansion Bolt Anchor Screws 5pcs X7B9 M6x40mm Repair Part Hex Head Sleeve Expansion Bolt Anchor Screws 5pcs X7B9 M6x40mm Expansion anchor bolt with flat washer and hex nut. Applications: be widely used in fence, burglarproof doors and windows, canopy, air.M6x40mm Expansion anchor bolt with flat washer and hex nut. Thread Size: M6x40mm. The working principle of expansion screw: Put the expansion screw into the ground or the hole on the wall and then tighten the nuts of the expansion bolt with wrench.
