DuraDrive 1/4 in. x 3 1/4 in. Blue Rustproof Coated Flat Head Square Drive Concrete Screws (100 Pack) - Perfect for Fastening Wood to Concrete, Deck Building, and Outdoor Construction Projects

DuraDrive 1/4 in. x 3-1/4 in. Blue Ruspert Coated Flat Head Square Drive Concrete Screw (100-Pack) has an improved thread design that allows it to anchor sturdily into concrete, brick and block. Using the correct bit (that is included), drill hole in masonry to depth of at least 1/4 in. deeper than installed screw.

Features

• Ideal for installation into concrete, bricks or blocks.
• Primarily used in dry exterior applications.
• Double Hi Lo threads add more strength and reduces required torque for faster installation / removal.
• Reversible and removable.

Includes

• (1) 3/16 in. x 4-1/2 in. Drill bit

Specifications