Hex Spacers are in the group Spacers & Standoffs. In the context of fasteners, spacers are non-threaded seperators inserted between two other objects to keep them a constant distance apart. A standoff is a fastener (often threaded), used in the electronics industry to keep two assemblies (such as a circuit board and a surface), a defined distance apart.
Hex Spacers Diameters
Hex Spacers are available on the FCH Network with Imperial/US diameters that range from #1 to 4 and with Metric diameters that range from M2 to M10. The length of Hex Spacers is usually measured from the point to the underside of the head.