180pcs Alloy Steel M3 Hex Socket Button Head Round Heat Screw Assortment RSJ

ITEM NAME:180pcs Alloy Steel M3 Hex Socket Button Head Round Heat Screw Assortment RSJ.180pcs M3 6/8/10/12 foreign trade 10.9 class high strength round head flat head hexagon socket screw flat pad combination set. Thread specification: M3. M3 6 to 15. M3 8 to 15. M3 10 to 15. M3 12 to 15.