Hygienic Hex Head Screws Drive Hex Drive Size 13 mm Fastener Length 20 mm Finish Polished Flange Diameter 18 mm Head Height 14.5 mm Head Width 13 mm Material Stainless Steel Material Grade/Class Grade 316L Material Quality Standards AISI Pack Size Small Pack System of Measurement Metric Tensile Strength 500 N/sq mm Thread Size M8 Thread Style Fully Threaded Resistance Properties Corrosion-Resistant