IO-M3X10/M3HN-100
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31701986-IO-M3X10/M3HN-100
Screws & Fasteners M3 Thread, 10mm, Flathead Phillips, Steel, Nickel, Pack=100 (100 Screw/100 Nut)
given in nominal sizes, not in the actual measurement.
A special design is cut into the head of the screw that the screwdriver will fit into when the screw is driven into a surface. This is called a drive. There are many different designs of drives.