An assortment of tapped nylon spacers from Hillman. Nylon spacers are used to create space between two objects in order to properly position them. The tough, resilient nylon construction of these spacers works well in electrical insulation applications. Parts often used as bushings, bearings, rollers, and/or glides. To install, these tapped spacers screw onto a threaded rod or stud. This assortment includes myriad tapped spacer sizes with screw threads running 6-32 thru 1/4-20. Full assortments of #58187 contain twelve (12) refills comprised of Hillman item numbers #58188 - #58199.