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The cheese head screws with hexagon socket, also called Allen screws, are manufactured according to European and American dimensional and quality standards (UNI-EN-DIN-ISO-ASTM-ASME). These fasteners feature diameters ranging from 20mm (7/8") to 64 mm (2"1/2), with a length up to 640 mm. Customers are given the opportunity to customise the size of the head, thread, shank, processing tolerances. The fasteners are made of carbon and alloy steel, according to strength classes 4.6-5.6-8.8-10.9-12.9-14.9-B7. We offer galvanic coatings that also include dehydrogenation, geomet, burnishing and phosphating.