Hygienic Hex Nut, Nut Overall Height 9.5 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 M4, Thread Depth 6 mm, Collar Diameter 11 mm, Washer Outside Diameter 11.8 mm, Hex Width 7 mm, Seal Material H-NBR, Seal Material – Maximum Temperature 150 Degrees C, Seal Material – Minimum Temperature -25 Degrees C