Gkw limited, a part of the k k bangur group of companies, has a major screws and fasteners division. Wood screws, csk head, are made in steel and brass. These are available in the following range: diameter - from 2 to 16 sg; length - from 8 to 125 mm; specification - is 6760, bs1210, ansi b18.6.1. These nettlefolds woods screws are the first choice of architects, builders and furniture makers.