An assortment of metric stainless steel socket set screw variants from The Hillman Group. Socket set screws are fully-threaded headless screws with a recessed hex drive. The screw passes through a threaded hole in the outer object and is tightened against the inner object to prevent it from moving relative to the outer object. Included variants range M4-0.7 thru M8-1.25 in USS coarse screw thread size and run 5mm thru 12mm in length. Full assortments of #4414 contain sixteen (16) refills comprised of Hillman item numbers #4415 - #4430.