Description:
Extended anchor bolt with flat washer and hex nut
Application: Widely used for fencing, anti-theft doors and windows, canopy, air conditioning rack, home decoration, engineering and so on.
Working principle of expansion screw: Put the expansion screw into the ground or wall hole and tighten the nut of the expansion bolt with a wrench. Bolts out while the metal sheath does not move. Therefore, the larger head of the bolt expands the metal sheath to fill the entire hole. Now you cannot unscrew the expansion screw.
How to install:
Select the chopping bit of the same diameter as the expert screw casing and attach it to the electric drill for punching. The depth of the hole must be the same as the length of the bolt. Then insert the expansion bolt set into the hole. Remember: Screw the nut and do not allow the bolt to fall into the hole if the drill is too deep.
Tighten the nut 2-3 buckle and loosen the nut. Secondly, the fixed item is mounted with a perforated fixed piece and then mounted with the aim to the bolt. Use an outer gasket or spring washer to screw the nut tightly.