Concrete screws are ideal for use in concrete, brick or block base material. The threads of these screws actually cut threads into the base material, providing excellent holding values. 

To determine the minimum length of Concrete Screw required, add the thickness of the material to be fastened and the minimum embedment of 1”. To determine the maximum length of Concrete Screw required, add the thickness of the material to be fastened and the maximum embedment 1-3/4”.

Each box of 100 screws comes with the proper size masonry drill bit required for proper installation.

Required masonry drill bit to use:

• 3/16" diameter use 5/32" bit
• 1/4" diameter use 3/16" bit

Concrete Screws are coated to provide excellent rust resistance.

Required drivers to use with the different head style Concrete Screws:

• #2 Phillips for 3/16"dia. Flat Head Concrete Screw
  
• 1/4" Hex for  3/16" dia. Hex Head Concrete Screw
• #3 Phillips for 1/4" dia. Flat Head Concrete Screw
• 5/16" Hex for 1/4" dia. Hex Head Concrete Screw