M4 x 6mm Flat/Countersunk Head Socket Screws,Stainless Steel,Full Thread,Right Hand,Metric Pack 100-piece, Thread Dia.4mm, Screw Length 6mm Head Diameter: 8mm, Head Height: 2.3mm,Thread Pitch: 0.7mm Driver type: Hex Key/Allen Key/Hex wrench/Hex Bit Stainless Steel, Full Thread, Right Hand M4 Countersunk Head Socket Machine Screws