Stainless Steel Cushion Clamp - 5/16" - 10-Pack. Nominal Diameter:5/16" (8mm). Thickness: 0.04. Width: 3/8" (10mm). Screw Size: #8. Prevents corrosion. Resistant to oils, acids, saltwater. Temperatures range from -50 to 300F. Absorbs shock and vibration. Reduces unwanted noise. 1/4" clearance mounting hole. WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.