Closing screw with metric connection thread according to DIN EN 60423, glass fibre reinforced, with flame retardant, halogen-free. Nominal size: M 40 Connection thread length: 8 mm Operating temperature range: -40° to 100°C Glow wire test according to DIN EN 60695-2-10+11/VDE 0471-2-10+11: 650°C Protection class: IP54 with connection thread sealing ring 987M... (please order separately!): IP68 Material: Polyamide Color: light gray RAL: 7035 (similar)