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: 10PcsSpecifications: 3/8"-16 x 5/8"inchThread Diameter: 3/8"Screw Length: 5/8"inchThread Pitch: 16PTIHead Diameter: 0.78inch(20mm)Hexagon Socket Width (Diagonal Width): 7/32"inchMaterial: 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.