Square Machine Screw Nuts Hangzhou Huachao Fastener Co., Ltd. Base Info Material:Carbon SteelType:Square Machine Screw NutsConnection:Common BoltHead Style:HexagonalStandard:DIN, ANSI, GB, JIS, GOST, BSWGrade:8.8Trademark:HANGCHAOOrigin:P. R. CHS Code:73181600 Description Pre:Cone Nuts Next:Long Radius Stainless Steel Bend Pipe Fitting