Hygienic Hex Nut Nut Overall Height 32 mm Nut Material Grade 316L Nut Material Finish Bright (Uncoated) Standards EHEDG Certified FDA Compliant RoHS For Environment Hygienic System of Measurement Metric Nut Material Stainless Steel Thread Size M20 Thread Depth 22 mm Collar Diameter 40 mm Washer Outside Diameter 40.8 mm Hex Width 30 mm Seal Material EPDM Seal Material - Maximum Temperature 120 Degrees C Seal Material - Minimum Temperature -40 Degrees C