binifiMux 500pcs M3 Phillips Countersunk Flat Head Machine Screws Hex Nuts Assortment Kit 304 Stainless Steel M3 x 6mm 8mm 10mm 12mm 16mm 1

[Content:] M3 x 30mm --- 20Pcs M3 x 25mm --- 20Pcs M3 x 20mm --- 20Pcs M3 x 18mm --- 40Pcs M3 x 16mm --- 40Pcs M3 x 12mm --- 40Pcs M3 x 10mm --- 40Pcs M3 x 6mm --- 40Pcs M3 x8mm --- 40Pcs 220pcs --- M3 Hex Nuts [About Countersunk Screws:] The countersunk screws are mostly used in places where the surface of the parts cannot be raised after installation. The parts to be fastened are thick and thin. The so-called thick, that is, the thickness of the parts to be fastened is larger than the head of the countersunk head screw. Thickness, after the screw is tightened, a part of the screw thread does not enter the threaded hole.