M10x60mm Hex Expansion Bolt 5 Pack Expansion Screws Heavy Duty Bolts Anchor Fastener 304 Stainless Steel for Concrete Brick Wall

[SIZE]: Specification: M10*60mm; Total Length: 60mm (2.36 ); Thread Diameter: 10mm (0.39 ); Hole Size: 14mm (0.55 ); Drilling depth: 40mm (1.57 ); Quantity: 5 [MATERIAL]: Made of high quality 304 stainless steel they have good corrosion resistance rust resistance and high hardness which provides a longer service life can be used indoor and outdoor even in humid environment. [APPLICATION]: Expansion screws are suitable for fastening items to concrete bricks and walls they are widely used for fence canopy and equipment installation air conditioning fixing home decoration engineering installation etc. [HOW TO USE]: 1. Select a bit with the same diameter as the expansion screw casing install it on the electric drill and dirll a proper hole; 2. Insert the expansion bolt into the hole tighten the nut for 2 to 3 turns and unscrew the nut when expansion bolt si very tight without any looseness and then remove the lock spring and washer; 3. Align the fixing holes with the bolts and install. Put in the washer and lock spring in sequence screw in the nut and tighten it with a wrench. [PRECAUTIONS]: 1. When using percussion drills to punch holes they must be punched vertically and the hole diameter cannot be too large otherwise the tightness will be affected. 2. When it is installed upside down on the roof it must be installed on a solid material. It is not suitable to install overweight objects nor can it install machines with large vibrations because there is a risk of falling due to vibration and overweight.