Review on 🔧 Migiwata Fractional Stainless Steel with High Resistance by Kobby Fairchild

7/64" equals 0.109". I'm not sure of the nominal and exact measurements, but it's 0.10 diameters per micron. There is a little wiggle room when drilling holes in metals, but I don't know what the spec says. However, these are more durable bits made from cobalt steel. But small bits tend to break when side loading is applied during drilling. You're no exception to this rule, so don't apply too much pressure, use a drill press, and use drill lube.