DuraDrive 1/4 in. x 3-1/4 in. Blue Ruspert Coated Hex Washer Head Slot 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.
- 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.
- (1) 3/16 in. x 4-1/2 in. Drill bit
|Head Type||Slotted Hex Washer|
|Head Size||5/16 in.|
|Screw Size||1/4 in. x 3-1/4 in.|
|Bit Size||3/16 in. x 4-1/2 in.|
|Quantity per Jug||100|