These Shim Washers are also known as Bearing Inner Race Spacers, and Precision Shaft Spacing Shim Washers. A comprehensive line offering thicknesses from 0.001" up to 0.016" from stock. Shaft sizes covered are 5/64", 3/32", 1/8", 3/16", 1/4", 5/16", 3/8", and 1/2". Manufactured from full hard 300 series stainless for strength and corrosion resistance. 100% made in the USA of DFARS compliant steel. Used originally to go between the inner race of a bearing and the shaft support, they have evolved into a tight tolerance precision shim used in electronics, industrial, and power transmission applications. Precision stamped, and burr free.