Application: Widely used in fences, security doors and windows, canopies, air conditioning rack fixing, home decoration, engineering, etc.
How the expansion bolt works: Put the expansion bolt into the hole on the ground or wall, and then tighten the nut of the expansion bolt with a wrench. With the bolts on the outside, the metal sheath won't move. Therefore, the larger head of the bolt will expand the metal sheath so that it fills the entire hole. Now the expansion screw cannot be pulled out.
installation method:
Choose a chopper drill with the same diameter as the expansion screw housing, mount it on the power drill for punching. The depth of the hole should be equal to the length of the bolt. Then insert the set expansion bolts into the holes.

●Remember: Do not tighten the nut and do not drop the bolt when drilling too deep.
Tighten the nut to get 2 to 3 retaining rings and unscrew the nut while expanding the bolt without loosening. The fixtures are then fitted with perforated fixtures and bolted. The outer washer or spring washer is used to tighten the nut.