Panel and Enclosure Standoffs and Spacers: Type - Female Threaded Standoff; Shape - Hex; Length - Spacer - 0.500" (12.70mm); Spacer Diameter - 0.250" (6.35 mm); Material - Aluminum; Color-Finish - Iridite; End A - Female 4-40; End B - Female 4-40; Material Specification - ASTM B211