... screw series, ordinary screws Material:carbon steel Fasteners1. Products Detailes: 1NameScrew,bolts.nuts2MaterialIron,carbon steel,brass, ... aluminum,stainless steel3Diameter rangeM3-M16 mm ,the length within 150mm4Head diametre rangethe largest is 35mm5Surface treatmentZinc,Nickle,Passivated,Tin-plated ... more prefessional technical staff for design and quality control.4. Workshop Show:We have ...