DAOKI 150pcs M3 6-20mm White Hex Spacers Nylon Screw Nut Washer Assortment Standoff Kit Stand-off Plastic Accessories set Thread: M3 (3mm) Thread pitch: 0.5mm Male end thread length: 6mm Screw Length: 6 ~ 20mm (not include top head) Standoff Length:6 ~ 20mm (not include male end thread length)