Window Frame Concrete Screws - Countersunk Head 7.5mm

Self attacking straight in, no need to embed expansion tube, high hardness substrate, drill hole and screw in without bending or breaking

Special thread, strong anchoring force, anti loosening, galvanized anti rust, suitable for indoor and outdoor use

The pointed tail and cutting groove design allows for direct drilling into concrete, red bricks, stone, and aerated blocks, eliminating the need for drilling and placing expansion pipes. A single pers

High quality carbon steel, after heat treatment, has high hardness and sufficient toughness, making it difficult to bend, crack, or slip when drilling into hard substrates; Surface galvanized/Dacromet

Variable diameter/deep tooth special thread, with a large bite area, tightly locked with the substrate, strong pull-out and tensile resistance, stable load-bearing capacity, and long-term use that is

Optional styles include countersunk, pan head, hexagonal head, etc. The countersunk head can be hidden on the surface for a smooth and aesthetically pleasing installation; Suitable for conventional to

Full range size coverage, suitable for fixing keels, brackets, doors and windows, conduits, storage racks, etc. It is a commonly used fastener for decoration, infrastructure, and equipment installatio

High Strength Concrete Screws, Anti-rust & Firm Holding. Galvanized Concrete Screws for Masonry & Brick

Self-drilling design, easy installation. Hardened steel, no bending or breaking

Strong thread for excellent pull resistance. Galvanized finish, rust proof for indoor & outdoor use