1.Hexagon Weld Nuts 2.Mm16-M20 3.plain , zinc or orthers 4.carbon steel; 1.all kinds of standard nuts such as ... ,true 8.0,8.8 and etc;5.material:carbon steel(incude A3#,34#,45#,etc,),6.finished:plain,yellow zinc ... -forming & hot-forming8.surface:hot treatment9.our main products include hexagon nuts,flanged nuts,welded nuts,square nuts,nylon lock nuts ...