Hex screw bolt can be widely used in the home and office appliance, communication equipments, ship assembly and other machinery industry. Perfect choice to mount your bench vise. | Made of high quality 18-8 (304) stainless steel, provides strength and great protection from corrosions and tarnishing. | Screw Thread Diameter: 3/8"; Screw Thread Pitch: 16 TPI; Screw Length: 7"; Thread Length: 1-1/4". Extra-large and thick flat washer. | Package Included: 4 Sets hex head screwbolts, hex nuts , flat & lock washers.