Specification: Model: MXCH7;  Screw Drive Type: Hex Socket;  Screw Head Type: Flat Head (Countersunk Head);  Material: Carbon Steel 10.9 Grade;  Color: Black;  Size: M3 M4 M5;  Box Size (L*W*D): 17.6*10.2*2.3CM;     Features: - 460pcs M3 M4 M5 hex socket flat head screws.  - Black appearance, dark color will fit well in different occasions.  - With 8, 12, 16, 20mm lengths, completely diversified assortment, meet your different application.  - Flat head design is mostly used on products where a flush fit is required on the surface, such as door hinges, timber joinery or into steel applications.  - Made of carbon steel, extremely high hardness, makes them good at resisting abrasion and retaining shape. They can withstand significant force before deforming.  - Comes with a delicate plastic organizer box for storage, also suitable for collecting your small accessories.     Package Included: Type Length Quantity;  M3 Screw 8mm 30Pcs;  M3 Screw 12mm 30Pcs;  M3 Screw 16mm 30Pcs;  M3 Screw 20mm 30Pcs;  M3 Nuts - 100Pcs;  M4 Screw 8mm 20Pcs;  M4 Screw 12mm 20Pcs;  M4 Screw 16mm 20Pcs;  M4 Screw 20mm 20Pcs;  M4 Nuts - 80Pcs;  M5 Screw 8mm 10Pcs;  M5 Screw 12mm 10Pcs;  M5 Screw 16mm 10Pcs;  M5 Screw 20mm 10Pcs;  M5 Nuts 40Pcs;  Total Quantity: 460Pcs