1212pcs Black Nylon Plastic Pan Round Head Phillips Screws Bolts and Nuts,M2M3M4M5M6 Metric Threaded Screws Bolt and Nut Assortment Set for Micro Controller Board Building,Insulate or Fasten PCB Board

Those stock props are bad. Get these ptops HQProp T2.2X1.6X3 and use the m2 prop screws. you can even use nylon prop screws if you want to keep the weight low. I use them for my pavo20 and it flies better, it's more reliable and these props can take a lot more damage without affecting flight performance.