005 in.115 in, Outside Diameter 0.1875 in, Retaining Rib Diameter Not Applicable, Material Stainless Steel, Material Grade/Class 18-8, Finish Plain, Pack Size Small Pack, System of Measurement Inch, Hex Width Not Applicable, Color Silver, Dimensional Standards ASTM A582, Hex Width Tolerance Not Applicable, Inside Diameter Tolerance 0 to 0.01 in, Outside Diameter Tolerance +/-0.