Spacer Spacer Type Round For Screw Size #8 Overall Length 1 1/2 in Inside Diameter 0.171 in Outside Diameter 0.375 in Retaining Rib Diameter Not Applicable Material Nylon Finish Plain Pack Size Small Pack System of Measurement Inch Hex Width Not Applicable Color White Hex Width Tolerance Not Applicable Inside Diameter Tolerance +/-0.005 in Maximum Temperature 185 Degrees F Outside Diameter Tolerance +/-0.015 in Overall Length Tolerance +/-0.005 in