Varieties:- A available in different sizes, head style ,head recess , threads & point for varied application such as for roofing sheets , air ventilators, wood and synthetic wood . Features:- 1.Very well electroplated 2.Heat treatment at required temperatures 3.Life time rust free as screw with SS 304 Head available. 4.Very well engineering with regards to threading, pinch point head & hardness. 5.EPDM washer which is weather , oil & heat resistant Applications:- 1.Metal roofing sheet 2.Metal wall Cladding Sheet 3.Fiber Cement Boards 4.Calcium Silicate Board 5.Poly Carbonate Roofing Sheet 6.PVC & Fiberglass Roofing Sheet 7.Gypsum Board False Ceiling Tiles 8.M.S. & Aluminum Framing & Paneling