APPLICATION:-This flat-head hex socket screw is widely applicable for furniture assembly, vehicle maintenance, machinery debugging, and other scenarios requiring a flush mounting surface.ABOUT THIS PRODUCTS/FEATURES:-The screw head features an internal hexagon combined with a countersunk design. The internal hex socket structure, when paired with a standard hex wrench, efficiently transmits torque, reduces slippage, and enhances installation precision and efficiency.SPECIFICATION:Quantity: 15PcsSpecifications: M4-0.7 x 50mmThread Diameter: M4Screw Length: 50mmThread Pitch: 0.7mmHead Diameter: 0.31inch(8mm)Hexagon Socket Width (Diagonal Width): 2.5mmMaterial: 304 Stainless SteelColor: SilverSurface Treatment: PlainTAKE NOTICE OF/TIPS:-For connections subjected to prolonged vibration, a regular inspection schedule should be established to ensure no signs of loosening are present.