Dadi in plastica con filetto GAS come da disegno allegato MATERIALE: grani di polietilene QUANTITA: 4.000.000 pz / 12 mesi -- - the outer format is type round/hexagon, with round edges and with the sense of manoeuvre inscribed on it - inside the nut is with gas thread and sealing gasket rezistent to PGL (Petrol Gas Liquid) - the nut will be used on the know of the gas tank and must withstand a test pressure of 7-10 bar (working pressure) - the article must be free of burrs, not have cracks or thread damage that could make the usage improper - the thread must be correctly executed and must respect the number of gangs specified in the drawing