3/8"-16 Grade 18-8 Stainless Steel Serrated Flange Nut / THREAD CLASS: 2B THREAD DIRECTION: RIGHT-HAND WASHER OUTSIDE DIAMETER: 0.728 INCHES MINIMUM AND 0.750 INCHES MAXIMUM OVERALL HEIGHT: 0.330 INCHES MINIMUM AND 0.347 INCHES MAXIMUM NUT STYLE: A294 HEXAGON WIDTH ACROSS FLATS: 0.628 INCHES MINIMUM AND 0.650 INCHES MAXIMUM THREAD SERIES: UNC THREAD QUANTITY PER INCH: 16 NOMINAL THREAD SIZE: 0.375 INCHES MATERIAL: STEEL CORROSION RESISTING OVERALL