Spacer Spacer Type Round For Screw Size #4 Overall Length 1 1/2 in Inside Diameter 0.115 in Outside Diameter 0.25 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 +/-0.005 in