Yellow Zinc Truss Head Cross Drive Self -Tapping Screws Tianjin Boya Metal Products Co., Ltd. Material:Carbon SteelType:Pan HeadGroove:CrossConnection:Common BoltHead Style:RoundStandard:DIN, GB, ANSI, BSW, JIS, GOST Base Info Model NO.:13mm-100mmGrade:4.8Treatment:Nickled PlatedSize:25-100mmCuts:4-6 CutsThread:Full Thread 3,4 ThreadTransport Package:Shipping by SeaTrademark:BOYAOrigin:Tianjin ChinaHS Code:7318140090Production Capacity:5000tons,Year Description Overview Product DescriptionDetailed PhotosPackaging & ShippingFAQContact Pre:Rail Fastener Dog Spike Bolt for Wooden Sleeper Next:Square Head Bolt of Railway Fastening System