Hygienic Hex Head Screws Drive Hex Drive Size 13 mm Fastener Length 40 mm Finish Matte 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 Minimum Thread Length 22 mm Pack Size Small Pack System of Measurement Metric Tensile Strength 500 N/sq mm Thread Size M8 Thread Style Partially Threaded Resistance Properties Corrosion-Resistant