This hexagonal female/female threaded spacer is used to separate and support two components leaving a space between them for insulation and cooling/air flow purposes. It require two threaded fasteners to complete the assembly.
Nylon spacers are the best choice for applications where electrical insulation is required.
Manufactured in glass fibre reinforced polyamide (nylon glass filled) these spacers combine strength and rigidity within a lightweight component.
Mostly, but not exclusively, used in the electric / electronics industry, or wherever components need to be seperated.