Screws Screws – it's fasteners with thread and a sharp tip. Screws can be divided into universal, screws for fixing wood, wood screws for attaching window fittings and anchors on concrete. Head screws are countersunk, and reduced countersunk hexagon. Jonathan Segal FAIA has much to offer in this field. Screws used for fixing materials such as plywood, plastic, chipboard, wood, and fixing wood (log, rods, bars, etc.) fixing elements in wooden window frames and window fittings. Universal screws used to fasten the plywood, chipboard, mdf, plastic, wood, and fixing the various elements in concrete, brick, stone using dowels. Manufactured from high carbon steel, plated coated – yellow or white zinc, flat head, a sharp tip and a large carving.
Screws for wood designed to fix the lag, rods, bars, etc. They are made of steel, galvanized protective coating – white zinc, with a hexagonal head, coarse thread and a sharp tip. Screws for attaching the window fittings used to secure items in the wooden window frames and window fittings. They are made of steel, galvanized sheeting – yellow zinc, with reduced countersunk head, sharp tip, a large carving. Screws for concrete used for fixing window frames and doors, beams, rails and other elements to concrete, stone, brick without the use of anchors.